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Dulles Intl

$313+ 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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — IAD
Jan 21 — Jan 281
Wed 1/21
Wed 1/28
1 adult, Economy
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Cheap 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 December 22, 2025.

This United Airlines deal was found by Cheapflights users on 12/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:55 amOTP - IAD
2 stops32h 26mUnited Airlines
Wed 12/3110:00 pmIAD - OTP
1 stop18h 55mUnited Airlines
Deal found 12/20$622
This United Airlines deal was found by Cheapflights users on 12/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/225:55 amOTP - IAD
2 stops32h 32mUnited Airlines
Tue 12/3010:05 pmIAD - OTP
2 stops42h 50mUnited Airlines
Deal found 12/20$641
This United Airlines deal was found by Cheapflights users on 12/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/225:55 amOTP - IAD
2 stops32h 32mUnited Airlines
Mon 12/295:40 pmIAD - OTP
1 stop17h 55mUnited Airlines
Deal found 12/20$696
This KLM deal was found by Cheapflights users on 12/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:35 amOTP - IAD
1 stop14h 30mMultiple Airlines
Sun 1/186:50 pmIAD - OTP
1 stop14h 00mMultiple Airlines
Deal found 12/20$720
This Delta deal was found by Cheapflights users on 12/20. 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.
Sat 12/276:00 amOTP - IAD
1 stop17h 05mDelta
Wed 12/3112:58 pmIAD - OTP
2 stops16h 07mDelta
Deal found 12/20$749
This Delta deal was found by Cheapflights users on 12/20. 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.
Sat 12/276:00 amOTP - IAD
1 stop17h 05mDelta
Tue 12/304:55 pmIAD - OTP
2 stops37h 05mDelta
Deal found 12/20$761
This KLM deal was found by Cheapflights users on 12/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/261:55 pmOTP - IAD
1 stop33h 10mMultiple Airlines
Wed 1/76:50 pmIAD - OTP
1 stop34h 15mMultiple Airlines
Deal found 12/21$769
This United Airlines deal was found by Cheapflights users on 12/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:55 amOTP - IAD
2 stops32h 26mUnited Airlines
Mon 12/295:40 pmIAD - OTP
1 stop17h 55mUnited Airlines
Deal found 12/20$772
This United Airlines deal was found by Cheapflights users on 12/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/225:55 amOTP - IAD
2 stops32h 32mUnited Airlines
Sun 12/285:15 pmIAD - OTP
1 stop13h 50mUnited Airlines
Deal found 12/20$774

Find 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 December 22, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$523
(Orbitz)

One-way from

$313
(Finnair)

Popular in

August

Cheapest in

February

Average price

$614
Provider with most accurate pricing for Bucharest Otopeni Intl-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bucharest Otopeni Intl-Washington, D.C. Dulles Intl flights.
Search Deals
From Bucharest Otopeni Intl to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Bucharest Otopeni Intl to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 22, 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

Sun 6/7

8:20 am-5:25 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Sat 6/13

7:15 pm-12:30 am

1 stop22h 15m

$523

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Mon 1/26

10:10 am-7:20 pm

1 stop16h 10m

Washington, D.C. Dulles Intl

Sat 1/31

1:30 pm-8:50 am

1 stop12h 20m

$535

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Thu 1/22

5:50 am-4:24 pm

2 stops17h 34m

Washington, D.C. Dulles Intl

Wed 2/4

5:15 pm-2:00 pm

1 stop13h 45m

$551

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Fri 1/23

5:55 am-8:26 pm

2 stops21h 31m

Washington, D.C. Dulles Intl

Tue 2/10

1:15 pm-3:45 pm

2 stops19h 30m

$554

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Fri 1/23

6:00 am-7:09 pm

2 stops20h 09m

Washington, D.C. Dulles Intl

Tue 2/10

6:50 pm-10:50 pm

1 stop21h 00m

$555

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Sat 1/31

6:00 am-4:05 pm

1 stop17h 05m

Washington, D.C. Dulles Intl

Sun 2/15

12:35 pm-1:00 pm

2 stops17h 25m

$556

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Thu 2/5

1:55 pm-12:24 am

2 stops17h 29m

Washington, D.C. Dulles Intl

Thu 2/12

6:05 pm-1:00 pm

1 stop11h 55m

$561

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Fri 1/30

6:00 am-7:09 pm

2 stops20h 09m

Washington, D.C. Dulles Intl

Sun 2/15

6:05 pm-1:00 pm

1 stop11h 55m

$561

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Tue 1/13

6:30 am-4:40 pm

1 stop17h 10m

Washington, D.C. Dulles Intl

Tue 7/14

10:20 pm-1:10 am

1 stop19h 50m

$562

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Thu 2/12

9:00 pm-3:35 pm

1 stop25h 35m

Washington, D.C. Dulles Intl

Mon 2/16

6:20 pm-11:00 pm

1 stop21h 40m

$573

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 16 results
1
2

Compare providers for flights from Otopeni Intl to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Otopeni Intl to Dulles Intl in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Bucharest Otopeni Intl Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Bucharest Otopeni Intl Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Bucharest Otopeni Intl Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bucharest Otopeni Intl Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Bucharest Otopeni Intl Airport-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, May 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 $418). Flying from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $630). 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 December 22, 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 evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 50% 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 December 22, 2025.
See what other customers who have flown with Austrian Airlines, Air France, 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
880 reviews

Crew

8.1

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Andra,Aug 2025

LHR - LAX

Flight was very good, few minutes delayed, but good flight. We both are satisfied, thank you!
Austrian Airlines
7.6
Good
880 reviews
Austrian Airlines
7.6
Good
880 reviews

Crew

8.1

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Andra,Aug 2025

LHR - LAX

Flight was very good, few minutes delayed, but good flight. We both are satisfied, thank you!
Air France
7.4
Good
1,511 reviews
Austrian Airlines
7.6
Good
880 reviews

Crew

8.1

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Andra,Aug 2025

LHR - LAX

Flight was very good, few minutes delayed, but good flight. We both are satisfied, thank you!
Turkish Airlines
7.3
Good
4,107 reviews
Austrian Airlines
7.6
Good
880 reviews

Crew

8.1

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Andra,Aug 2025

LHR - LAX

Flight was very good, few minutes delayed, but good flight. We both are satisfied, thank you!
Lufthansa
6.8
Okay
7,644 reviews
Austrian Airlines
7.6
Good
880 reviews

Crew

8.1

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Andra,Aug 2025

LHR - LAX

Flight was very good, few minutes delayed, but good flight. We both are satisfied, thank you!
British Airways
6.7
Okay
7,602 reviews
Austrian Airlines
7.6
Good
880 reviews

Crew

8.1

Overall

7.6

Food

6.8

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Andra,Aug 2025

LHR - LAX

Flight was very good, few minutes delayed, but good flight. We both are satisfied, thank you!

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 16h 05m. Fly via British Airways, Turkish 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 Air France, from $448, and Austrian Airlines, from $462. United Airlines is currently priced 33% 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, May 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 $418). Flying from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $630). 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
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Bowie
Largo
McLean
Clinton
Cordova

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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 December 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$418Average$519FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$448Average$768FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$462Average$666FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$489Average$734FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$508Average$631FlexibilityNo cancel feeOn-time70%
KLMCheapest$514Average$672FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$558Average$619FlexibilityNo cancel feeOn-time77%

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