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Dulles Intl

$363+ Cheap flights from Otopeni Intl (OTP) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — IAD
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap flight deals from Otopeni Intl to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Otopeni Intl (OTP) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 20, 2025.

Round-trip from

$459
(Air Canada)

One-way from

$363
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$866
From Bucharest Otopeni Intl to Washington, D.C. Dulles Intl
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One-way flight from Bucharest Otopeni Intl to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 4% potential increase in price ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Otopeni Intl to Dulles Intl

Cheapest flights from Otopeni Intl to Dulles Intl
Explore the most affordable flight options available from Otopeni Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This Air Canada deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:30 amOTP - IAD
2 stops21h 35mAir Canada
Tue 9/231:00 pmIAD - OTP
2 stops16h 25mAir Canada
Deal found 8/19$459
This oojo deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/49:25 pmOTP - IAD
1 stop29h 34mScandinavian Airlines
Sat 10/1810:05 pmIAD - OTP
1 stop15h 30mScandinavian Airlines
Deal found 8/20$460
This Mytrip deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:35 amOTP - IAD
2 stops35h 38mAir Canada
Mon 10/1310:20 amIAD - OTP
2 stops25h 15mAir Canada
Deal found 8/19$462
This United Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:05 amOTP - IAD
2 stops32h 05mUnited Airlines
Mon 10/136:10 pmIAD - OTP
1 stop15h 40mUnited Airlines
Deal found 8/19$463
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:50 pmOTP - IAD
1 stop32h 00mUnited Airlines
Tue 11/410:00 pmIAD - OTP
1 stop13h 25mUnited Airlines
Deal found 8/18$464
This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/159:50 pmOTP - IAD
1 stop29h 09mScandinavian Airlines
Fri 9/1910:05 pmIAD - OTP
1 stop15h 30mScandinavian Airlines
Deal found 8/18$465
This Expedia deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:05 amOTP - IAD
2 stops16h 45mLufthansa
Thu 10/910:20 pmIAD - OTP
1 stop19h 40mLufthansa
Deal found 8/18$466
This United Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:05 amOTP - IAD
2 stops32h 06mUnited Airlines
Thu 11/66:00 pmIAD - OTP
1 stop11h 30mUnited Airlines
Deal found 8/19$467
This SWISS deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:30 amOTP - IAD
1 stop17h 10mSWISS
Mon 11/2410:15 pmIAD - OTP
2 stops19h 15mSWISS
Deal found 8/18$473
This Delta deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/67:00 amOTP - IAD
1 stop15h 35mDelta
Tue 10/2112:09 pmIAD - OTP
2 stops17h 01mDelta
Deal found 8/20$478
This Lufthansa deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:05 amOTP - IAD
1 stop21h 00mLufthansa
Tue 11/410:00 pmIAD - OTP
2 stops13h 35mLufthansa
Deal found 8/18$481

Cheapflights Fare Finder

 
Customize your flight search to find flights from Otopeni Intl to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Otopeni Intl

Fly to

Dulles Intl

Route

Depart

Return

Price

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Tue 9/16

6:30 am-9:05 pm

2 stops21h 35m

Washington, D.C. Dulles Intl

Tue 9/23

1:00 pm-12:25 pm

2 stops16h 25m

$459

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Sat 10/4

9:25 pm-7:59 pm

1 stop29h 34m

Washington, D.C. Dulles Intl

Sat 10/18

10:05 pm-8:35 pm

1 stop15h 30m

$459

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Mon 9/22

6:35 am-11:13 am

2 stops35h 38m

Washington, D.C. Dulles Intl

Mon 10/13

10:20 am-6:35 pm

2 stops25h 15m

$462

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Mon 9/22

6:05 am-7:10 am

2 stops32h 05m

Washington, D.C. Dulles Intl

Mon 10/13

6:10 pm-4:50 pm

1 stop15h 40m

$463

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Fri 10/31

2:50 pm-4:50 pm

1 stop32h 00m

Washington, D.C. Dulles Intl

Tue 11/4

10:00 pm-6:25 pm

1 stop13h 25m

$464

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Mon 9/15

9:50 pm-7:59 pm

1 stop29h 09m

Washington, D.C. Dulles Intl

Fri 9/19

10:05 pm-8:35 pm

1 stop15h 30m

$465

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Thu 10/2

6:05 am-3:50 pm

2 stops16h 45m

Washington, D.C. Dulles Intl

Thu 10/9

10:20 pm-1:00 am

1 stop19h 40m

$466

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Wed 10/1

6:05 am-7:11 am

2 stops32h 06m

Washington, D.C. Dulles Intl

Thu 11/6

6:00 pm-12:30 pm

1 stop11h 30m

$467

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Fri 11/14

6:30 am-4:40 pm

1 stop17h 10m

Washington, D.C. Dulles Intl

Mon 11/24

10:15 pm-12:30 am

2 stops19h 15m

$473

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Mon 2/16

6:00 am-4:05 pm

1 stop17h 05m

Washington, D.C. Dulles Intl

Tue 2/24

12:30 pm-12:05 pm

2 stops16h 35m

$478

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 17 results
1
2

Best time to book a flight from Otopeni Intl to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Otopeni Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Currently, July is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport (average of $303). Flying from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

What is the cheapest time of day to fly from OTP to IAD?

Find hourly flight availability from Otopeni Intl to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

One of the essential ways to save on airfare from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 10% on airfare.

How much does it cost to fly round-trip from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated August 20, 2025.
See what other customers who have flown with Austrian Airlines, United Airlines, and Turkish Airlines from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
830 reviews

Overall

7.6

Crew

8.1

Food

6.8

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

VIE - RHO

They went by offering coffee and didn’t even asked me totally ignored me
Austrian Airlines
7.6
Good
830 reviews
Austrian Airlines
7.6
Good
830 reviews

Overall

7.6

Crew

8.1

Food

6.8

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

VIE - RHO

They went by offering coffee and didn’t even asked me totally ignored me
United Airlines
7.4
Good
8,928 reviews
Austrian Airlines
7.6
Good
830 reviews

Overall

7.6

Crew

8.1

Food

6.8

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

VIE - RHO

They went by offering coffee and didn’t even asked me totally ignored me
Turkish Airlines
7.3
Good
3,949 reviews
Austrian Airlines
7.6
Good
830 reviews

Overall

7.6

Crew

8.1

Food

6.8

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

VIE - RHO

They went by offering coffee and didn’t even asked me totally ignored me
Lufthansa
6.8
Okay
7,337 reviews
Austrian Airlines
7.6
Good
830 reviews

Overall

7.6

Crew

8.1

Food

6.8

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

VIE - RHO

They went by offering coffee and didn’t even asked me totally ignored me
British Airways
6.7
Okay
7,289 reviews
Austrian Airlines
7.6
Good
830 reviews

Overall

7.6

Crew

8.1

Food

6.8

Boarding

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

VIE - RHO

They went by offering coffee and didn’t even asked me totally ignored me

Related info for your journey

Find useful and relevant information for your journey from Otopeni Intl to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    There are many flights that can get you from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport in 21h 35m. Fly via Air Canada, Scandinavian Airlines, or United Airlines to get the fastest option. Airlines will cover a distance of 4962 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport round-trip?

    Cheapflights users have booked flights from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport round-trip from $418. Other airlines that can offer you cheap pricing are British Airways, from $461, and Austrian Airlines, from $481. United Airlines is currently priced 35% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Otopeni Intl to Dulles Intl 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 Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport?

    Currently, July is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport (average of $303). Flying from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Waldorf
Bowie

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Otopeni Intl to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Otopeni Intl to Baltimore flights
Otopeni Intl to Reagan-National flights

Top 7 airlines flying from Otopeni Intl to Dulles Intl

Discover the top 7 airlines that operate flights from Otopeni Intl to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$418Average$695FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$461Average$622FlexibilityNo cancel feeOn-time70%
Austrian AirlinesCheapest$481Average$640FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$489Average$785FlexibilityNo cancel feeOn-time76%
KLMCheapest$514Average$737FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$559Average$619FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$597Average$779FlexibilityNo cancel feeOn-time77%

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