Mongolia

$645+ Cheap flights from Dulles Intl (IAD) to Mongolia

IAD — UBN
Dec 10 — Dec 171
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Cheap flight deals from Dulles Intl to Mongolia

Cheapest flights from Dulles Intl to Mongolia

Tue 12/89:20 pm -
1 stop21h 05m
Tue 12/159:15 am -
1 stop39h 30m
Deal found 11/8$1,274
Wed 12/211:35 pm -
1 stop27h 30m
Wed 12/97:45 am -
1 stop25h 50m
Deal found 11/5$1,286
Fri 11/2711:35 pm -
1 stop38h 05m
Fri 12/47:45 am -
1 stop25h 50m
Deal found 11/5$1,316
Fri 11/277:00 am -
2 stops38h 25m
Fri 12/412:25 pm -
2 stops22h 05m
Deal found 11/5$1,364
Wed 12/211:35 pm -
1 stop27h 30m
Thu 12/103:15 pm -
2 stops40h 15m
Deal found 11/9$1,400
Tue 11/177:00 am -
2 stops38h 25m
Fri 11/2712:25 pm -
2 stops23h 56m
Deal found 11/5$1,414
Tue 11/176:00 am -
2 stops46h 40m
Fri 11/2711:50 am -
1 stop19h 40m
Deal found 11/5$1,427
Sat 12/58:02 am -
2 stops37h 23m
Mon 3/112:25 pm -
1 stop34h 25m
Deal found 11/7$1,429
Wed 12/210:11 am -
2 stops35h 14m
Thu 12/1012:25 pm -
2 stops25h 16m
Deal found 11/9$1,434
Sat 12/56:00 am -
2 stops54h 10m
Tue 12/1511:50 am -
1 stop19h 40m
Deal found 11/9$1,464
Wed 12/21:30 pm -
1 stop27h 00m
Thu 12/109:15 am -
1 stop23h 10m
Deal found 11/9$1,477
Wed 12/25:00 pm -
2 stops28h 25m
Wed 12/912:25 pm -
1 stop34h 25m
Deal found 11/5$1,504

Find flight deals from Dulles Intl to Mongolia

Round-trip from

$1,262
(Delta)

One-way from

$645
(Kiwi.com)

Popular in

April

Cheapest in

January

Average price

$1,153
From Washington, D.C. Dulles Intl to Mongolia
One-way flight from Washington, D.C. Dulles Intl to Mongolia
Highest demand for flights based on searches. 25% potential increase in price ($536 potential increase over avg. RT price).
Cheapest flight prices on average. 11% potential price decrease ($163 potential savings vs. average RT price).
Average for round-trip flights in November 2026

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Mongolia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Ulaanbaatar

IAD Washington, D.C. Dulles Intl - UBN Ulaanbaatar Chinggis Khaan

IADUBN

Washington, D.C. Dulles Intl

Sat 2/6

6:37 am-11:05 pm

3 stops51h 28m

Ulaanbaatar Chinggis Khaan

Wed 12/31

12:00 am-12:00 pm

Nonstop0h 00m

$645

Washington, D.C.Ulaanbaatar

IAD Washington, D.C. Dulles Intl - UBN Ulaanbaatar Chinggis Khaan

IADUBN

Washington, D.C. Dulles Intl

Sat 2/6

10:56 am-10:25 am

2 stops34h 29m

Ulaanbaatar Chinggis Khaan

Wed 12/31

12:00 am-12:00 pm

Nonstop0h 00m

$754

Washington, D.C.Ulaanbaatar

IAD Washington, D.C. Dulles Intl - UBN Ulaanbaatar Chinggis Khaan

IADUBN

Washington, D.C. Dulles Intl

Fri 2/5

6:00 pm-5:30 am

2 stops46h 30m

Ulaanbaatar Chinggis Khaan

Wed 12/31

12:00 am-12:00 pm

Nonstop0h 00m

$774
Quickest round-trip

Washington, D.C.Ulaanbaatar

IAD Washington, D.C. Dulles Intl - UBN Ulaanbaatar Chinggis Khaan

IADUBN

Washington, D.C. Dulles Intl

Fri 2/5

11:50 am-10:25 am

1 stop33h 35m

Ulaanbaatar Chinggis Khaan

Wed 12/31

12:00 am-12:00 pm

Nonstop0h 00m

$824

Washington, D.C.Ulaanbaatar

IAD Washington, D.C. Dulles Intl - UBN Ulaanbaatar Chinggis Khaan

IADUBN

Washington, D.C. Dulles Intl

Wed 12/2

11:35 pm-4:05 pm

1 stop27h 30m

Ulaanbaatar Chinggis Khaan

Wed 12/9

7:45 am-8:35 pm

1 stop25h 50m

$1,286

Washington, D.C.Ulaanbaatar

IAD Washington, D.C. Dulles Intl - UBN Ulaanbaatar Chinggis Khaan

IADUBN

Washington, D.C. Dulles Intl

Tue 2/2

1:30 pm-7:25 am

1 stop28h 55m

Ulaanbaatar Chinggis Khaan

Tue 2/16

9:15 am-7:25 pm

1 stop23h 10m

$1,292

Washington, D.C.Ulaanbaatar

IAD Washington, D.C. Dulles Intl - UBN Ulaanbaatar Chinggis Khaan

IADUBN

Washington, D.C. Dulles Intl

Fri 11/27

11:35 pm-2:40 am

1 stop38h 05m

Ulaanbaatar Chinggis Khaan

Fri 12/4

7:45 am-8:35 pm

1 stop25h 50m

$1,316

Washington, D.C.Ulaanbaatar

IAD Washington, D.C. Dulles Intl - UBN Ulaanbaatar Chinggis Khaan

IADUBN

Washington, D.C. Dulles Intl

Fri 2/26

7:29 pm-10:25 am

2 stops25h 56m

Ulaanbaatar Chinggis Khaan

Fri 3/5

12:25 pm-11:51 pm

2 stops24h 26m

$1,362

Washington, D.C.Ulaanbaatar

IAD Washington, D.C. Dulles Intl - UBN Ulaanbaatar Chinggis Khaan

IADUBN

Washington, D.C. Dulles Intl

Fri 11/27

7:00 am-10:25 am

2 stops38h 25m

Ulaanbaatar Chinggis Khaan

Fri 12/4

12:25 pm-9:30 pm

2 stops22h 05m

$1,364

Washington, D.C.Ulaanbaatar

IAD Washington, D.C. Dulles Intl - UBN Ulaanbaatar Chinggis Khaan

IADUBN

Washington, D.C. Dulles Intl

Wed 12/2

11:35 pm-4:05 pm

1 stop27h 30m

Ulaanbaatar Chinggis Khaan

Thu 12/10

3:15 pm-6:30 pm

2 stops40h 15m

$1,400

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 15 resultsSorted by cheapest first
1
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Best time to book a flight from Dulles Intl to Mongolia

Have a flexible travel schedule? Discover the best time to fly to Mongolia from Dulles Intl with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Mongolia

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Mongolia?

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Mongolia (average of $1,062). Flying from Washington, D.C. Dulles Intl Airport to Mongolia in March is currently the most expensive (average of $1,694). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Mongolia

Get a feel of what it's like to fly with Korean Air and Turkish Airlines from Washington, D.C. Dulles Intl Airport to Mongolia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.5

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Walter,Jul 2026

LAX - BKK

It was all good! The crew was amazing and attentive seats were comfortable and we got to our destination right on time! A great experience overall!

Boarding

8.5

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Walter,Jul 2026

LAX - BKK

It was all good! The crew was amazing and attentive seats were comfortable and we got to our destination right on time! A great experience overall!

Boarding

8.5

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Walter,Jul 2026

LAX - BKK

It was all good! The crew was amazing and attentive seats were comfortable and we got to our destination right on time! A great experience overall!

Related info for your journey

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Mongolia?

    Departing from Washington, D.C. Dulles Intl Airport to Mongolia will take you 25h 56m. Washington, D.C. Dulles Intl Airport and Mongolia are separated by a distance of 6443 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Dulles Intl to Mongolia that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Mongolia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Mongolia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Mongolia.

  • Can I find deals for business class flights from Dulles Intl to Mongolia?

    Yes. Cheapflights offers flight deals from Dulles Intl to Mongolia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Mongolia?

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Mongolia (average of $1,062). Flying from Washington, D.C. Dulles Intl Airport to Mongolia in March is currently the most expensive (average of $1,694). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Dulles Intl to Mongolia

Top 3 airlines flying from Dulles Intl to Mongolia

AirlineCheapestAverageFlexibilityOn-time
MIAT MongolianCheapest$1,025Average$1,461FlexibilityNo cancel feeOn-time63%
Turkish AirlinesCheapest$1,032Average$1,587FlexibilityNo cancel feeOn-time77%
Korean AirCheapest$1,341Average$1,716FlexibilityNo cancel feeOn-time81%

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