Find Cheap Flights from Washington Dulles Intl to Bangkok (IAD - TH1)

Search hundreds of travel sites at once for deals on flights to Bangkok

Sat 12/16
Sat 12/23
Any month
Compare vs. KAYAK |

Book cheap flights from Washington Dulles Intl to Bangkok (round-trip)

Airports
Origin
Washington
$535
only
$535
Destination
Bangkok
$1145
only
$1145
$535
only
$535
Tue, Jan 30
IAD
BKK
32h 55m
Thu, Mar 15
BKK
IAD
19h 45m
Trip: 44 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 3457 reviews
Overall
6.5
Boarding
6.6
Comfort
6.4
Crew
6.8
Entertainment
5.9
Food
6.0
PEK
OKA
Excellent 8.0

I didn't know when I was supposed to board or what the process was, and the crew wasn't helpful to me when I asked. Maybe language barrier?

CAN
PEK
Good 6.0

staff are overall friendly.

flights are delayed constantly, with connecting flights in short time span is impossible, luggage would miss and causes another delay

PEK
LAX
Excellent 8.3

Despite somewhat limited English skills, the crew were very professional and pleasant. The flight was overall, a wuccess, and I would absolutely fly air china again.

The food on this leg of the trip was hit and miss. The food o. The first leg was very good. They have a ways to go to being their catering up to the level of some other airlines, he is been an overall positive experience.

PEK
BKK
Good 7.0

Great service, comfortable seats.

The food was aweful, but it's airplain food, usually it's aweful. There wasn't an entertainment system for each seat. Instead there was a bigger screen for every I don't know how many rows.

LAX
PEK
Excellent 9.0

I am incredibly happy with my Air China experience. Crew worked diligently to create a good experience, and was kind when I was having difficulty communicating. The food was surprisingly fabulous! Authentic Chinese cuisine and tasty. Several passengers did not review the regulations and were pretty rude when Air China crew told them to turn off and put away cell phones. Crew handled this well.

Bathrooms were not very clean. I didn't realize until halfway through the flight that we needed to get our own beverages and throw away our own trash (different than the other airlines)- would have appreciated this being announced. I was confused during boarding process about when to stand and when to board, but watched the people around me and figured it out. We took off late/ landed late, but I was able to make my connection in Beijing without any stress so was happy.

Fri, Jan 26
IAD
BKK
26h 00m
Sat, Feb 3
BKK
IAD
35h 44m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Sun, May 6
IAD
BKK
23h 25m
Mon, May 14
BKK
IAD
32h 55m
Trip: 9 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 16958 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
8.0
VKO
IST
Excellent 10.0

Great flight

Na

EDI
IST
Good 6.3

Crew

Boarding status changed straight from pre boarding to last call. No AC

YYZ
IST
Excellent 10.0

Luggage policy, helpful ground and air crew. Price.

IST stoppover, damaged luggages.

IST
IAD
Excellent 10.0

Everything

IST
KTM
Mediocre 2.0

I did not like anything.

Everything. I will never book a flight from Kayak from now on. Kayak just charged us a lot of money and did not do anything for us.

Fri, Jan 19
IAD
BKK
36h 09m
Thu, Feb 1
BKK
IAD
32h 06m
Trip: 14 days
6.3GoodShow reviews
Overall 6.3 Good
Based on 4104 reviews
Overall
6.4
Boarding
6.5
Comfort
6.4
Crew
6.8
Entertainment
6.1
Food
5.9
PVG
TPE
Excellent 9.6

Pleasant. Clean. Entertainment worked. No real. Complaints.

Are seats ever comfy in economy? These were nice and clean.

PVG
DEL
Okay 5.0

we were on time and it was cheap-ish

customer service is non-existent, crew speaks poor english, seats are kid-size and so are meal servings, entertainment sound system was awful, and transit hotel staff was unhelpful/rude

ORD
PVG
Excellent 8.6

Price. On time. Good food.

Not being able to use phone -even in airplane mode for games or entertainment. Bus ride from terminal to boarding in Shanghai

SFO
PVG
Excellent 9.3

The tickets were a great price, the staff was great, the entertainment selection was great, and overall I'd give the experience an A-

The food wasn't good and it was really hard to request the vegetarian option.

PVG
SIN
Excellent 8.6

No one to assist my friends enter the plane. No one to help with hauling minor carryon baggage up the outdoor staircase. Very difficult and no offer at all for anyone in a party of six to help. No lift and no one offered assistance in business class to help at all.once on the plane service was outstanding. Passengers in 70s and 80’s and no knowledge of the need to to climb stairs and without any assistance. Attendants watched the elderly struggle.

Thu, Jun 7
IAD
BKK
23h 30m
Tue, Jun 19
BKK
IAD
27h 50m
Trip: 13 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 9789 reviews
Overall
8.3
Boarding
8.3
Comfort
8.3
Crew
8.5
Entertainment
8.6
Food
8.1
DXB
BKK
Excellent 8.0

After our trip from Cape Town to Dubai with Emirates which was not that great we where pleasantly surprised when we where bumped up to business class from Dubai to Bangkok. We did not expect this. Although we did not take advantage of all the extras business class has to offer we had a great nights sleep and the breakfast was superb. The cabin crew was excellent all the time. Thank you Emirates.

DXB
CPT
Excellent 9.0

Flight appeared less than half-full, I had a full 4 seats to stretch out. Yes, this was just lucky, but very much appreciated.

Dull food.

MAA
DXB
Good 7.0

friendly crew

due to 11 kg total weight I had to check in a soft carry on bag resulting in :1/2 hour extra wait time and some crushed items. Vegetarian food was pretty tasteless.

NBO
DXB
Good 7.3

Cabin crew were reluctant offering passengers liquids on board we had to go and find them to ask for either water or juice as it was a long Flight which took 15 Hours on Air

DXB
IAD
Okay 4.6

They missed me for breakfast despite my being awake and trying to get their attention. Then they ran out of one of the choices for both dinner and breakfast. This despite the plane being less than capacity. Also there were so many empty seats in the back but I noticed that some people were still being packed in like the flight was full. Emirates should do a better job of assigning seats to make as many people comfortable as possible.

Mon, Mar 5
IAD
BKK
20h 10m
Mon, Mar 12
BKK
IAD
19h 45m
Trip: 7 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 3457 reviews
Overall
6.5
Boarding
6.6
Comfort
6.4
Crew
6.8
Entertainment
5.9
Food
6.0
PEK
LAX
Excellent 10.0

flying in a B787-9

PEK
BKK
Good 7.0

Great service, comfortable seats.

The food was aweful, but it's airplain food, usually it's aweful. There wasn't an entertainment system for each seat. Instead there was a bigger screen for every I don't know how many rows.

PEK
LAX
Excellent 8.3

Despite somewhat limited English skills, the crew were very professional and pleasant. The flight was overall, a wuccess, and I would absolutely fly air china again.

The food on this leg of the trip was hit and miss. The food o. The first leg was very good. They have a ways to go to being their catering up to the level of some other airlines, he is been an overall positive experience.

PEK
HFE
Okay 4.3

Flight departed at 7.55 am, was about 2 hours - no real breakfast was served, just a roll and a muffin.

PEK
OKA
Excellent 8.0

I didn't know when I was supposed to board or what the process was, and the crew wasn't helpful to me when I asked. Maybe language barrier?

Mon, Apr 2
IAD
BKK
20h 05m
Tue, Apr 10
BKK
IAD
24h 35m
Trip: 9 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 3457 reviews
Overall
6.5
Boarding
6.6
Comfort
6.4
Crew
6.8
Entertainment
5.9
Food
6.0
PEK
LAX
Excellent 10.0

flying in a B787-9

LAX
PEK
Excellent 9.0

I am incredibly happy with my Air China experience. Crew worked diligently to create a good experience, and was kind when I was having difficulty communicating. The food was surprisingly fabulous! Authentic Chinese cuisine and tasty. Several passengers did not review the regulations and were pretty rude when Air China crew told them to turn off and put away cell phones. Crew handled this well.

Bathrooms were not very clean. I didn't realize until halfway through the flight that we needed to get our own beverages and throw away our own trash (different than the other airlines)- would have appreciated this being announced. I was confused during boarding process about when to stand and when to board, but watched the people around me and figured it out. We took off late/ landed late, but I was able to make my connection in Beijing without any stress so was happy.

OKA
PEK
Good 7.6

Agent was VERY helpful and helped me to change my seat so that I could have an aisle. She also made sure I had the aisle seat on my connecting flight

Breakfast was not good unfortunately

PEK
HFE
Okay 4.3

Flight departed at 7.55 am, was about 2 hours - no real breakfast was served, just a roll and a muffin.

SFO
PEK
Excellent 9.0

Service was absolutely great, seats were spacey and comfy, entertainment system for every seat had a wide selection. Overall a great flight!

The food was aweful, but it's airplain food, usually it's aweful...

Mon, Mar 5
IAD
BKK
32h 55m
Tue, Apr 3
BKK
IAD
24h 35m
Trip: 29 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 3457 reviews
Overall
6.5
Boarding
6.6
Comfort
6.4
Crew
6.8
Entertainment
5.9
Food
6.0
CAN
PEK
Good 6.0

staff are overall friendly.

flights are delayed constantly, with connecting flights in short time span is impossible, luggage would miss and causes another delay

LAX
PEK
Excellent 9.0

I am incredibly happy with my Air China experience. Crew worked diligently to create a good experience, and was kind when I was having difficulty communicating. The food was surprisingly fabulous! Authentic Chinese cuisine and tasty. Several passengers did not review the regulations and were pretty rude when Air China crew told them to turn off and put away cell phones. Crew handled this well.

Bathrooms were not very clean. I didn't realize until halfway through the flight that we needed to get our own beverages and throw away our own trash (different than the other airlines)- would have appreciated this being announced. I was confused during boarding process about when to stand and when to board, but watched the people around me and figured it out. We took off late/ landed late, but I was able to make my connection in Beijing without any stress so was happy.

OKA
PEK
Good 7.6

Agent was VERY helpful and helped me to change my seat so that I could have an aisle. She also made sure I had the aisle seat on my connecting flight

Breakfast was not good unfortunately

LAX
PEK
Okay 5.0

Delayed flights, missed connections, lost luggage

PEK
LAX
Excellent 10.0

flying in a B787-9

Tue, Feb 20
IAD
BKK
24h 55m
Sun, Mar 4
BKK
IAD
24h 30m
Trip: 13 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 3457 reviews
Overall
6.5
Boarding
6.6
Comfort
6.4
Crew
6.8
Entertainment
5.9
Food
6.0
LAX
PEK
Excellent 9.0

I am incredibly happy with my Air China experience. Crew worked diligently to create a good experience, and was kind when I was having difficulty communicating. The food was surprisingly fabulous! Authentic Chinese cuisine and tasty. Several passengers did not review the regulations and were pretty rude when Air China crew told them to turn off and put away cell phones. Crew handled this well.

Bathrooms were not very clean. I didn't realize until halfway through the flight that we needed to get our own beverages and throw away our own trash (different than the other airlines)- would have appreciated this being announced. I was confused during boarding process about when to stand and when to board, but watched the people around me and figured it out. We took off late/ landed late, but I was able to make my connection in Beijing without any stress so was happy.

PEK
HFE
Okay 4.3

Flight departed at 7.55 am, was about 2 hours - no real breakfast was served, just a roll and a muffin.

SFO
PEK
Excellent 9.0

Service was absolutely great, seats were spacey and comfy, entertainment system for every seat had a wide selection. Overall a great flight!

The food was aweful, but it's airplain food, usually it's aweful...

PEK
BKK
Good 7.0

Great service, comfortable seats.

The food was aweful, but it's airplain food, usually it's aweful. There wasn't an entertainment system for each seat. Instead there was a bigger screen for every I don't know how many rows.

TSA
TSN
Good 7.0

Goof food and service

The flight was delayed by 95 minutes, which screw up my schedule badly..

Tue, Feb 27
IAD
BKK
27h 55m
Mon, Mar 19
BKK
IAD
32h 35m
Trip: 20 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 16958 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
8.0
EDI
IST
Good 6.3

Crew

Boarding status changed straight from pre boarding to last call. No AC

MNL
IST
Okay 5.3

Flight was ok

The flight was actually run by turkish airlines, not philippine air as stated in my confirmation email, so we were sent to the wrong terminal. Nothing in the email said which terminal the flight would depart from or that it was actually turkish airlines. Very irresponsible and communication for customers should be much clearer. Luckily we were very early for the flight or it could have caused a serious problem.

IST
IAD
Excellent 10.0

Everything

YYZ
IST
Excellent 10.0

Luggage policy, helpful ground and air crew. Price.

IST stoppover, damaged luggages.

FCO
IST
Excellent 10.0

Great service!

Tue, Feb 20
IAD
BKK
24h 55m
Sun, Mar 4
BKK
IAD
30h 20m
Trip: 13 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 3457 reviews
Overall
6.5
Boarding
6.6
Comfort
6.4
Crew
6.8
Entertainment
5.9
Food
6.0
TSA
TSN
Good 7.0

Goof food and service

The flight was delayed by 95 minutes, which screw up my schedule badly..

PEK
OKA
Excellent 8.0

I didn't know when I was supposed to board or what the process was, and the crew wasn't helpful to me when I asked. Maybe language barrier?

CAN
PEK
Good 6.0

staff are overall friendly.

flights are delayed constantly, with connecting flights in short time span is impossible, luggage would miss and causes another delay

LAX
PEK
Excellent 9.0

I am incredibly happy with my Air China experience. Crew worked diligently to create a good experience, and was kind when I was having difficulty communicating. The food was surprisingly fabulous! Authentic Chinese cuisine and tasty. Several passengers did not review the regulations and were pretty rude when Air China crew told them to turn off and put away cell phones. Crew handled this well.

Bathrooms were not very clean. I didn't realize until halfway through the flight that we needed to get our own beverages and throw away our own trash (different than the other airlines)- would have appreciated this being announced. I was confused during boarding process about when to stand and when to board, but watched the people around me and figured it out. We took off late/ landed late, but I was able to make my connection in Beijing without any stress so was happy.

LAX
PEK
Good 6.3

Food was good. Flight attendants were good.

Tiny beds in business class with two-across seating so the window passenger has to climb over the aisle passenger. Are they stuck in the 90s? I won't fly with them again. Boarding in Beijing for Manila was a free for all. Business class was not called first. Isn't this why I pay triple the coach fare? No English language newspapers from Los Angeles to Beijing.

Sun, Dec 24
IAD
BKK
31h 09m
Thu, Dec 28
BKK
IAD
48h 31m
$1729
Trip: 5 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 3790 reviews
Overall
7.1
Boarding
7.2
Comfort
7.0
Crew
7.5
Entertainment
6.8
Food
6.7
BKK
CAN
Okay 4.6

We arrived safely.

I was unable to check in online.When I mentioned this at the ticket counter the agent responded that they kept hearing that from passageners. Apparently this wasn't enough of an issue to make any changes. The plane was uncomfortable for such a long flight. Lots of movie choices, but few current choices. Flight attendants weren't that friendly.

LAX
CAN
Excellent 9.6

Great crew service!

MNL
CAN
Excellent 9.3

Flight from Guangzhou to Vancouver was smooth. Cabin crew was great and attentive. Flight was even early to arrive!

Seats were a bit cramped.

CNX
CAN
Good 6.0

Flight crew were friendly and helpful.

Seats are hard and uncomfortable.

CAN
ICN
Mediocre 2.0

They left one of my bags in China. I need it

Tue, Apr 3
IAD
BKK
39h 00m
Wed, Apr 11
BKK
IAD
24h 35m
Trip: 9 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 3457 reviews
Overall
6.5
Boarding
6.6
Comfort
6.4
Crew
6.8
Entertainment
5.9
Food
6.0
PEK
LAX
Excellent 8.3

Despite somewhat limited English skills, the crew were very professional and pleasant. The flight was overall, a wuccess, and I would absolutely fly air china again.

The food on this leg of the trip was hit and miss. The food o. The first leg was very good. They have a ways to go to being their catering up to the level of some other airlines, he is been an overall positive experience.

CAN
PEK
Good 6.0

staff are overall friendly.

flights are delayed constantly, with connecting flights in short time span is impossible, luggage would miss and causes another delay

PEK
HFE
Okay 4.3

Flight departed at 7.55 am, was about 2 hours - no real breakfast was served, just a roll and a muffin.

PEK
BKK
Good 7.0

Great service, comfortable seats.

The food was aweful, but it's airplain food, usually it's aweful. There wasn't an entertainment system for each seat. Instead there was a bigger screen for every I don't know how many rows.

TSA
TSN
Good 7.0

Goof food and service

The flight was delayed by 95 minutes, which screw up my schedule badly..

Wed, Jun 20
IAD
BKK
27h 26m
Mon, Jul 9
BKK
IAD
53h 04m
Trip: 20 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Apr 6
IAD
BKK
39h 00m
Fri, Apr 13
BKK
IAD
30h 00m
Trip: 8 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 3457 reviews
Overall
6.5
Boarding
6.6
Comfort
6.4
Crew
6.8
Entertainment
5.9
Food
6.0
PEK
LAX
Excellent 8.3

Despite somewhat limited English skills, the crew were very professional and pleasant. The flight was overall, a wuccess, and I would absolutely fly air china again.

The food on this leg of the trip was hit and miss. The food o. The first leg was very good. They have a ways to go to being their catering up to the level of some other airlines, he is been an overall positive experience.

OKA
PEK
Good 7.6

Agent was VERY helpful and helped me to change my seat so that I could have an aisle. She also made sure I had the aisle seat on my connecting flight

Breakfast was not good unfortunately

PEK
OKA
Excellent 8.0

I didn't know when I was supposed to board or what the process was, and the crew wasn't helpful to me when I asked. Maybe language barrier?

PEK
BKK
Good 7.0

Great service, comfortable seats.

The food was aweful, but it's airplain food, usually it's aweful. There wasn't an entertainment system for each seat. Instead there was a bigger screen for every I don't know how many rows.

LAX
PEK
Good 6.3

Food was good. Flight attendants were good.

Tiny beds in business class with two-across seating so the window passenger has to climb over the aisle passenger. Are they stuck in the 90s? I won't fly with them again. Boarding in Beijing for Manila was a free for all. Business class was not called first. Isn't this why I pay triple the coach fare? No English language newspapers from Los Angeles to Beijing.

Tue, Jan 2
IAD
BKK
31h 05m
Wed, Feb 28
BKK
IAD
30h 10m
Trip: 58 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Feb 14
IAD
DMK
46h 15m
Sun, Feb 18
DMK
IAD
52h 30m
$1145
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Wed, May 2
IAD
DMK
43h 10m
Thu, May 31
DMK
IAD
34h 10m
$1234
Trip: 30 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Feb 19
IAD
DMK
41h 10m
Sat, Mar 3
DMK
IAD
47h 18m
$1240
Trip: 13 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Mar 5
IAD
DMK
41h 10m
Tue, Mar 27
DMK
IAD
46h 18m
$1278
Trip: 22 days
Overall 0.0 Poor
Based on 0 reviews
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

^
The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.