฿18,277 Find Cheap Flights to Washington, D.C. – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Washington, D.C. departing on 30/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return fare
฿26,697
Typical prices: ฿38,291-฿40,797
ซาอุเดียแอร์ไลน์
Sun 13/9Sun 20/9
BKK - IAD • 1 stop
Cheapest one-way flight
฿18,277
Multiple Airlines
Fri 30/10
BKK - BWI • 3 stops
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 3% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
March
Cheapest • 11% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Washington, D.C.!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to Washington, D.C.

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Washington, D.C.

Sun 13 Sep - Sun 20 Sep
ซาอุเดียแอร์ไลน์ Logo
15:25 - 15:45
BKK
-
IAD
35h 20m
1 stop
ซาอุเดียแอร์ไลน์ Logo
18:50 - 13:45
IAD
-
BKK
31h 55m
1 stop
฿26,697ซาอุเดียแอร์ไลน์
Sun 13 Sep - Sun 20 Sep
ซาอุเดียแอร์ไลน์ Logo
15:25 - 15:45
BKK
-
IAD
35h 20m
1 stop
ซาอุเดียแอร์ไลน์ Logo
18:50 - 13:45
IAD
-
BKK
31h 55m
1 stop
฿27,933ซาอุเดียแอร์ไลน์
Fri 11 Sep - Mon 28 Sep
United Airlines Logo
09:35 - 10:05
BKK
-
IAD
35h 30m
1 stop
United Airlines Logo
16:02 - 09:35
IAD
-
BKK
30h 33m
3 stops
฿34,148United Airlines
Tue 22 Sep - Wed 30 Sep
United Airlines Logo
09:35 - 10:05
BKK
-
IAD
35h 30m
1 stop
United Airlines Logo
16:02 - 09:35
IAD
-
BKK
30h 33m
3 stops
฿34,148United Airlines
Sun 27 Sep - Mon 19 Oct
Qatar Airways Logo
02:30 - 15:40
BKK
-
IAD
24h 10m
1 stop
Qatar Airways Logo
21:00 - 12:55
IAD
-
BKK
28h 55m
1 stop
฿35,451Qatar Airways
Mon 7 Sep - Tue 6 Oct
Qatar Airways Logo
03:00 - 15:40
BKK
-
IAD
23h 40m
1 stop
Qatar Airways Logo
21:00 - 06:20
IAD
-
BKK
22h 20m
1 stop
฿35,518Qatar Airways
Sat 19 Dec - Fri 15 Jan
Korean Air Logo
23:15 - 09:50
BKK
-
IAD
22h 35m
1 stop
Korean Air Logo
11:50 - 23:20
IAD
-
BKK
23h 30m
1 stop
฿44,706Korean Air
Mon 28 Sep - Mon 19 Oct
Korean Air Logo
21:40 - 11:05
BKK
-
IAD
24h 25m
1 stop
Korean Air Logo
13:15 - 01:05
IAD
-
BKK
24h 50m
1 stop
฿51,388Korean Air
Sat 12 Sep - Sat 19 Sep
เอทิฮัดแอร์เวย์ Logo
13:00 - 09:45
UTP
-
IAD
31h 45m
3 stops
เอทิฮัดแอร์เวย์ Logo
15:10 - 16:50
IAD
-
UTP
38h 40m
3 stops
฿66,591เอทิฮัดแอร์เวย์
Fri 20 Nov - Mon 23 Nov
เอทิฮัดแอร์เวย์ Logo
09:10 - 18:55
CNX
-
DCA
45h 45m
2 stops
เอทิฮัดแอร์เวย์ Logo
09:15 - 06:05
DCA
-
CNX
32h 50m
2 stops
฿92,553เอทิฮัดแอร์เวย์
Booking Insights

KAYAK's insights & trends for flights to Washington, D.C.

Get data-powered insights and trends into flights to Washington, D.C. to help you find the cheapest flights, the best time to fly and much more.

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 year for round-trip flights to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Washington, D.C. is March, where tickets cost ฿34,782 on average for return flights. On the other hand, the most expensive months are August and February, where the average cost of tickets from Thailand is ฿42,701 and ฿40,730 respectively. For one-way flights, the best month to travel is May with an average price of ฿22,353.

How far in advance should I book a flight to Washington, D.C.?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 2 weeks before departure, which saves you about 3% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Which is the cheapest airport to fly into in Washington, D.C.?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Washington, D.C. is Baltimore/Washington Airport (BWI), with an average flight price of ฿9,592.

Find deals

Good to know – Book Cheap Washington, D.C. Plane Tickets

Low season

October

Cheapest flight

฿18,277
Best time to beat the crowds (29% less expensive on average)
Most popular time to fly (43% more expensive on average)
Flight from Bangkok to Baltimore

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.

FAQs - booking Washington, D.C. flights

  • Which Washington, D.C. airport is closest to central Washington, D.C.?

    Washington, D.C. is served by 2 major airports. Reagan Washington National Airport (6 km) is the closest to the centre of Washington, D.C. and Washington Dulles Airport is 36 km from the centre.

  • How does KAYAK find such low prices on flights to Washington, D.C.?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Washington, D.C.?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Washington, D.C.?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Washington, D.C.

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Washington, D.C. flight deals.

Reviews of the top airline flying to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Thailand to Washington, D.C.. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Washington, D.C.? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
เดลต้าOverall score based on 8497 reviews
8.5Crew
8.1Boarding
7.8Entertainment
7.2Food
7.8Comfort
Airline reviews

Comfortable seats. Nice service online. Short flight, so not a lot of time to enjoy.

8.0 ExcellentMichael, Jul 2026
SEA - SMF
Read more เดลต้า reviews

Comfortable seats. Nice service online. Short flight, so not a lot of time to enjoy.

Awful. There was an unexpected delay of nearly three hours because there were not enough flight attendants. I understand this is likely due to FAA regulations; but in that case, Delta should coordinate with smaller airports such as RDU to have extra flight attendants on the ground and "on call". In addition, this was the second 2-hour+ delay to Boston on this route in one week.

It was strange that the flight attendant was so adamant about having phones turned to airplane mode that he was calling out names from networks shown and waiting until they were all gone. I've never experienced that before, and after already working through an hour+ delay, it felt tone deaf. I take dozens of flights per year and have never experienced anything similar.

Chaotic boarding at these gates, multiple gates squeezed in at the very end of a concourse, behind a restaurant. Agents gave up on boarding by individual zones. Flight itself was uneventful, which is all we hope for any more.

Flight delayed due to ground hold. Republic airways did a great job.

The flight was smooth, the crew was great but the plane was quite old

Flight was warm for first few hours and quite rough

Flight was delayed several times. At one point, they "pulled back" 15 minutes from the delayed boarding and sent a text saying we would board sooner than previously advised. The flight then was delayed again. And when we boarded, there was an unspecified technical issue which had us waiting in the plane for about an hour.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

1st flight had mechanical issues after we boarded and almost took off. They tried to fix on runway but couldn’t do we went back to the gate. They couldn’t fix it there either. So we had to deplane and board another plane 2 hrs later. All in all our flight was delayed 4 hrs so we had to cancel some business meeting we had in London for the morning since we were supposed to arrive at 7am and did not arrive until 11:45am. Also, the 2nd plane had mechanical issues as well but fortunately they were able to fix on runway.

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Towson
Fairfax
Arlington
Silver Spring
Bethesda
Falls Church

Everything you need to know for your flight to Washington, D.C.

Cabin class types available on flights to Washington, D.C.

Cabin classes available on flights to Washington, D.C.. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class Flights to Washington, D.C.
Business Class Flights to Washington, D.C.
Premium Economy Class Flights to Washington, D.C.
Economy class Flights to Washington, D.C.