What is the difference between the most popular and the most frequent airline at Washington, D.C.?

เตอร์กิชแอร์ไลน์ operates the most flights from Thailand to Washington, D.C. at 0 per week, while AIR PREMIA is the airline most often selected by KAYAK users searching for flights from Thailand to Washington, D.C.. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

Which airports serve Washington, D.C.?

Flights to Washington, D.C. arrive at: Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD).

Which airports serve Washington, D.C. and the surrounding area?

Flights to Washington, D.C. can arrive at several major airports serving the metro area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD). Nearby alternatives within 80.5 km of Washington, D.C. include Washington, D.C. Reagan-National (DCA), Fort Meade Tipton (FME) and Baltimore/Washington (BWI). These airports are not in Washington, D.C. itself but may be useful depending on your route, airline, and onward travel plans.

Which city has the cheapest flights to Washington, D.C.?

Based on fares booked in the past 5 days, the cheapest flights to Washington, D.C. are from Bangkok, starting at ฿26,370 return.

How do I know if a flight to Washington, D.C. is a good deal?

A good deal on a flight to Washington, D.C. is around ฿35,277 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

How expensive are last-minute flights to Washington, D.C.?

Last-minute fares to Washington, D.C. (booked within two weeks of departure) are typically 6% higher than the average return fare of ฿38,909.

What is the cheapest flight to Washington, D.C.?

Bangkok Suvarnabhumi Airport to Washington, D.C. is the cheapest route at ฿26,370 return, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.

How much is a flight to Washington, D.C.?

On average, a return flight from Thailand to Washington, D.C. costs ฿38,909, based on KAYAK data over the past 12 months. Return fares from Chiang Mai average ฿38,556, while Bangkok runs a bit higher at ฿38,909.

What is the cheapest day to fly to Washington, D.C.?

Friday is the cheapest day to fly to Washington, D.C. at ฿35,306 return on average over the past 12 months on KAYAK. Saturday is the most expensive at ฿41,544.

What is the cheapest month to fly to Washington, D.C.?

•March is the cheapest month to fly to Washington, D.C. with an average price of ฿35,272 return. •February (฿42,758) and May (฿40,263) are the most expensive. Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to Washington, D.C.?

Morning flights to Washington, D.C. are the cheapest at ฿35,373 return on average. Night flights are the most expensive at ฿40,903.

What is a good deal for flights to Washington, D.C.?

Flights under ฿35,277 are considered a good deal. 25% of KAYAK users found return flights to Washington, D.C. at or below these prices, with the lowest fares from: •Bangkok ฿35,250.

When are flights to Washington, D.C. the cheapest?

Flights to Washington, D.C. are cheapest 15 weeks before departure. Booking in this window typically costs about 23% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

What are the most popular airlines flying to Washington, D.C.?

AIR PREMIA is the most popular airline flying to Washington, D.C. among KAYAK users, followed by Qatar Airways and Korean Air.

฿13,927 CHEAP FLIGHTS to Washington, D.C. in 2026/27

Save 30% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

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Cheapest return flight

฿26,370

Typical prices: ฿35,277-฿42,951

AIR PREMIA

Sun 4/3Sat 24/3

BKK - IAD • 1 stop

Cheapest one-way flight

฿13,927

Typical prices: ฿21,816-฿35,759

เอทิฮัดแอร์เวย์

Fri 23/3

CNX - IAD • 1 stop

Top airlines

Korean Air

Best reviews • 8.4 score

Airline reviews

Top routes

CNX - WAS

Cheapest

TH1 - WAS

Most popular

Insights

When to book

15 weeks

in advance

Our data shows that travellers who book at least 15 weeks in advance save around 23% compared to booking last minute.

Insights

When to travel

March

Cheapest • 9% price drop

May

Most popular

Good to know

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KAYAK searches hundreds of sites at once to find you the best travel deals.

We hope you enjoy your trip to Washington, D.C.!

Flight Deals

Cheap Flights to Washington, D.C.

Discover the best prices for you by selecting your travel dates on KAYAK.

Return

One-way

Last minute

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Recent return flight deals to Washington, D.C.

Thu 4 Mar - Wed 24 Mar

22:55 - 20:35BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

33h 40m1 stop Incheon Intl

00:35 - 21:25IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

33h 50m1 stop Incheon Intl

฿26,370AIR PREMIA

Thu 4 Mar - Wed 24 Mar

22:55 - 20:35BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

33h 40m1 stop Incheon Intl

00:35 - 21:25IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

33h 50m1 stop Incheon Intl

฿26,403AIR PREMIA

Sat 19 Dec - Fri 15 Jan

20:50 - 09:00BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 10m1 stop Abu Dhabi Zayed Intl

14:25 - 23:40IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

21h 15m1 stop Abu Dhabi Zayed Intl

฿34,361เอทิฮัดแอร์เวย์

Sat 19 Dec - Fri 15 Jan

19:55 - 09:00BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

25h 05m1 stop Abu Dhabi Zayed Intl

14:25 - 23:40IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

21h 15m1 stop Abu Dhabi Zayed Intl

฿34,429เอทิฮัดแอร์เวย์

Thu 11 Mar - Thu 1 Apr

07:10 - 00:58BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

29h 48m2 stops Tokyo Narita San Francisco

13:05 - 09:35IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

33h 30m3 stops Chicago O'Hare Intl Los Angeles Hong Kong Intl

฿35,171United Airlines

Thu 11 Mar - Thu 1 Apr

07:10 - 09:25BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

38h 15m2 stops Tokyo Narita Chicago O'Hare Intl

22:10 - 09:35IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

48h 25m2 stops Los Angeles Hong Kong Intl

฿35,171United Airlines

Mon 8 Mar - Mon 23 Aug

14:20 - 09:10BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

30h 50m1 stop Tokyo Haneda

15:35 - 04:35IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

26h 00m2 stops Chicago O'Hare Intl Tokyo Haneda

฿35,913ANA

Mon 8 Mar - Mon 23 Aug

22:25 - 09:10BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

22h 45m1 stop Tokyo Haneda

15:35 - 04:35IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

26h 00m2 stops Chicago O'Hare Intl Tokyo Haneda

฿35,946ANA

Mon 8 Mar - Mon 9 Aug

20:35 - 15:55BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

31h 20m1 stop Doha Hamad Intl

21:00 - 19:05IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

35h 05m1 stop Doha Hamad Intl

฿41,510Qatar Airways

Mon 8 Mar - Mon 9 Aug

08:15 - 15:55BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

43h 40m1 stop Doha Hamad Intl

21:00 - 19:05IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

35h 05m1 stop Doha Hamad Intl

฿41,949Qatar Airways

Recent last minute flight deals to Washington, D.C.

Tue 3 Nov - Wed 18 Nov

02:25 - 09:00BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

42h 35m1 stop Abu Dhabi Zayed Intl

14:25 - 23:40IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

21h 15m1 stop Abu Dhabi Zayed Intl

฿34,935เอทิฮัดแอร์เวย์

Tue 3 Nov - Fri 6 Nov

09:10 - 09:00CNX Chiang Mai-IAD Washington, D.C. Dulles Intl

35h 50m1 stop Abu Dhabi Zayed Intl

23:35 - 23:35IAD Washington, D.C. Dulles Intl-CNX Chiang Mai

36h 00m1 stop Incheon Intl

฿35,744Multiple Airlines

Tue 3 Nov - Fri 6 Nov

09:10 - 09:00CNX Chiang Mai-IAD Washington, D.C. Dulles Intl

35h 50m1 stop Abu Dhabi Zayed Intl

23:35 - 17:50IAD Washington, D.C. Dulles Intl-CNX Chiang Mai

30h 15m2 stops Incheon Intl Guangzhou Baiyun

฿39,588Multiple Airlines

Wed 4 Nov - Wed 18 Nov

14:40 - 09:00BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

30h 20m1 stop Abu Dhabi Zayed Intl

20:50 - 12:30IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

27h 40m2 stops Lome Addis Ababa Bole

฿40,094Multiple Airlines

Wed 4 Nov - Wed 18 Nov

09:10 - 17:24BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

44h 14m2 stops Tokyo Haneda Chicago O'Hare Intl

12:50 - 11:30IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

34h 40m3 stops Houston George Bush Intcntl Los Angeles Hong Kong Intl

฿43,095United Airlines

Wed 4 Nov - Wed 18 Nov

16:55 - 13:35BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

32h 40m3 stops Hong Kong Intl Los Angeles Chicago O'Hare Intl

12:50 - 11:30IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

34h 40m3 stops Houston George Bush Intcntl Los Angeles Hong Kong Intl

฿43,399United Airlines

Thu 5 Nov - Mon 9 Nov

09:10 - 09:00CNX Chiang Mai-IAD Washington, D.C. Dulles Intl

35h 50m1 stop Abu Dhabi Zayed Intl

14:25 - 09:25IAD Washington, D.C. Dulles Intl-CNX Chiang Mai

31h 00m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

฿49,165เอทิฮัดแอร์เวย์

Thu 5 Nov - Mon 9 Nov

09:10 - 09:00CNX Chiang Mai-IAD Washington, D.C. Dulles Intl

35h 50m1 stop Abu Dhabi Zayed Intl

14:25 - 09:25IAD Washington, D.C. Dulles Intl-CNX Chiang Mai

31h 00m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

฿49,199เอทิฮัดแอร์เวย์

Wed 4 Nov - Mon 9 Nov

00:20 - 09:50CNX Chiang Mai-IAD Washington, D.C. Dulles Intl

21h 30m1 stop Incheon Intl

11:50 - 20:40IAD Washington, D.C. Dulles Intl-CNX Chiang Mai

44h 50m1 stop Incheon Intl

฿51,087Korean Air

Wed 4 Nov - Mon 9 Nov

00:20 - 09:50CNX Chiang Mai-IAD Washington, D.C. Dulles Intl

21h 30m1 stop Incheon Intl

11:50 - 20:40IAD Washington, D.C. Dulles Intl-CNX Chiang Mai

44h 50m1 stop Incheon Intl

฿51,121Korean Air

All return flight deals to Washington, D.C.

Thu 4 Mar - Wed 24 Mar

22:55 - 20:35BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

33h 40m1 stop Incheon Intl

00:35 - 21:25IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

33h 50m1 stop Incheon Intl

฿26,370AIR PREMIA

Thu 4 Mar - Wed 24 Mar

22:55 - 20:35BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

33h 40m1 stop Incheon Intl

00:35 - 21:25IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

33h 50m1 stop Incheon Intl

฿26,403AIR PREMIA

Sat 19 Dec - Fri 15 Jan

20:50 - 09:00BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

24h 10m1 stop Abu Dhabi Zayed Intl

14:25 - 23:40IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

21h 15m1 stop Abu Dhabi Zayed Intl

฿34,361เอทิฮัดแอร์เวย์

Sat 19 Dec - Fri 15 Jan

19:55 - 09:00BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

25h 05m1 stop Abu Dhabi Zayed Intl

14:25 - 23:40IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

21h 15m1 stop Abu Dhabi Zayed Intl

฿34,429เอทิฮัดแอร์เวย์

Thu 11 Mar - Thu 1 Apr

07:10 - 00:58BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

29h 48m2 stops Tokyo Narita San Francisco

13:05 - 09:35IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

33h 30m3 stops Chicago O'Hare Intl Los Angeles Hong Kong Intl

฿35,171United Airlines

Thu 11 Mar - Thu 1 Apr

07:10 - 09:25BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

38h 15m2 stops Tokyo Narita Chicago O'Hare Intl

22:10 - 09:35IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

48h 25m2 stops Los Angeles Hong Kong Intl

฿35,171United Airlines

Mon 8 Mar - Mon 23 Aug

14:20 - 09:10BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

30h 50m1 stop Tokyo Haneda

15:35 - 04:35IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

26h 00m2 stops Chicago O'Hare Intl Tokyo Haneda

฿35,913ANA

Mon 8 Mar - Mon 23 Aug

22:25 - 09:10BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

22h 45m1 stop Tokyo Haneda

15:35 - 04:35IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

26h 00m2 stops Chicago O'Hare Intl Tokyo Haneda

฿35,946ANA

Mon 8 Mar - Mon 9 Aug

20:35 - 15:55BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

31h 20m1 stop Doha Hamad Intl

21:00 - 19:05IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

35h 05m1 stop Doha Hamad Intl

฿41,510Qatar Airways

Mon 8 Mar - Mon 9 Aug

08:15 - 15:55BKK Bangkok Suvarnabhumi-IAD Washington, D.C. Dulles Intl

43h 40m1 stop Doha Hamad Intl

21:00 - 19:05IAD Washington, D.C. Dulles Intl-BKK Bangkok Suvarnabhumi

35h 05m1 stop Doha Hamad Intl

฿41,949Qatar Airways

Booking Insights

Price, demand, and travel trends for flights to Washington, D.C.

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

What is the cheapest flight to Washington, D.C.?: Bangkok Suvarnabhumi Airport to Washington, D.C. is the cheapest route at ฿26,370 return, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.
How much is a flight to Washington, D.C.? Average and cheapest price for all return flights to Washington, D.C. from each origin found by users searching on KAYAK in the last 12 months.: On average, a return flight from Thailand to Washington, D.C. costs ฿38,909, based on KAYAK data over the past 12 months. Return fares from Chiang Mai average ฿38,556, while Bangkok runs a bit higher at ฿38,909.
What is the cheapest day to fly to Washington, D.C.?: Friday is the cheapest day to fly to Washington, D.C. at ฿35,306 return on average over the past 12 months on KAYAK. Saturday is the most expensive at ฿41,544.
What is the cheapest month to fly to Washington, D.C.? To calculate monthly average prices, KAYAK takes all prices for each month over the last 12 months for flights to Washington, D.C., removes the top 0.1% to account for outliers, then takes the median of all values for each month.: •March is the cheapest month to fly to Washington, D.C. with an average price of ฿35,272 return.
•February (฿42,758) and May (฿40,263) are the most expensive.

Based on KAYAK data over the past 12 months.
What is the cheapest time of day to fly to Washington, D.C.? Average price for all return flights depending on time of departure, seen by users on KAYAK in the last 12 months.: Morning flights to Washington, D.C. are the cheapest at ฿35,373 return on average. Night flights are the most expensive at ฿40,903.
What is a good deal for flights to Washington, D.C.?: Flights under ฿35,277 are considered a good deal. 25% of KAYAK users found return flights to Washington, D.C. at or below these prices, with the lowest fares from:
•Bangkok ฿35,250.
When are flights to Washington, D.C. the cheapest?: Flights to Washington, D.C. are cheapest 15 weeks before departure. Booking in this window typically costs about 23% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Low season	August
High season	May
Cheapest flight	฿13,927

Beat the crowds with an average 47% drop in travellers.

The most popular month to fly with an average 76% increase in travellers.

One-way flight from Chiang Mai to Washington, D.C. Dulles Intl Airport

When to book flights to Washington, D.C.

Are your dates flexible? Find out the best times to travel to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated return price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. The information is for flights to Washington, D.C. based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

How do I know if a flight to Washington, D.C. is a good deal?
A good deal on a flight to Washington, D.C. is around ฿35,277 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.
Which airports serve Washington, D.C.?
Flights to Washington, D.C. arrive at: Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD).
Which city has the cheapest flights to Washington, D.C.?
Based on fares booked in the past 5 days, the cheapest flights to Washington, D.C. are from Bangkok, starting at ฿26,370 return.
How expensive are last-minute flights to Washington, D.C.?
Last-minute fares to Washington, D.C. (booked within two weeks of departure) are typically 6% higher than the average return fare of ฿38,909.
What is the difference between the most popular and the most frequent airline at Washington, D.C.?
เตอร์กิชแอร์ไลน์ operates the most flights from Thailand to Washington, D.C. at 0 per week, while AIR PREMIA is the airline most often selected by KAYAK users searching for flights from Thailand to Washington, D.C.. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.
Which airports serve Washington, D.C. and the surrounding area?
Flights to Washington, D.C. can arrive at several major airports serving the metro area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD). Nearby alternatives within 80.5 km of Washington, D.C. include Washington, D.C. Reagan-National (DCA), Fort Meade Tipton (FME) and Baltimore/Washington (BWI). These airports are not in Washington, D.C. itself but may be useful depending on your route, airline, and onward travel plans.

For the best chance at a low fare to Washington, D.C., book around 15 weeks before departure. Based on KAYAK data from the last 12 months, fares are historically about 23% lower during this window than last-minute fares.
For flights to Washington, D.C., a good return fare is around ฿35,277. If you find a fare below that, you're getting a strong deal.
If your travel dates are flexible, consider flying to Washington, D.C. in March. Return fares historically average ฿35,272, making March the cheapest month to travel based on KAYAK data from the last 12 months.
Before you book:

• Check the route's typical price range so you can spot a deal.
• Confirm baggage fees and seat selection costs on budget carriers.
• Verify whether you need any travel documents beyond an ID.
• Pick a departure airport, since your nearest may not be the cheapest origin.
Shift your departure to morning to save up to ฿5,530 on a return flight. Morning flights to Washington, D.C. average ฿35,373 compared to ฿40,903 for evening flights.
Once you arrive in Washington, D.C., a few great places to start are Vietnam Veterans Memorial and Nationals Park. These are popular with first-time visitors and can give you a good feel for the area.

Alexandria

Arlington

Towson

Fairfax

Silver Spring

Bethesda

Falls Church

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฿13,927 Find Cheap Flights to Washington, D.C. – Compare and Save

Everything you should know

Cheap Flights to Washington, D.C.

Recent return flight deals to Washington, D.C.

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Recent last minute flight deals to Washington, D.C.

All return flight deals to Washington, D.C.

Price, demand, and travel trends for flights to Washington, D.C.

What is the cheapest flight to Washington, D.C.?

How much is a flight to Washington, D.C.?

What is the cheapest day to fly to Washington, D.C.?

What is the cheapest month to fly to Washington, D.C.?

What is the cheapest time of day to fly to Washington, D.C.?

What is a good deal for flights to Washington, D.C.?

When are flights to Washington, D.C. the cheapest?

What are the most popular airlines flying to Washington, D.C.?

Key details for flights to Washington, D.C.

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Your questions about flights to Washington, D.C., answered

Your guide to booking Washington, D.C. flights

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