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Dulles Intl

$323+ 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
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Bucharest Otopeni Intl to Washington, D.C. Dulles Intl are usually found in February or September, booked 83 days in advance, depart on a Thursday or Friday and return on a Tuesday

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 September 11, 2025.

Round-trip from

$371
(Mytrip)

One-way from

$323
(British Airways)

Popular in

August

Cheapest in

February

Average price

$548
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 ($32 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 September 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 September 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/9. 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.
Thu 9/256:30 amOTP - IAD
1 stop16h 45mSWISS
Mon 9/298:45 pmIAD - OTP
1 stop11h 35mSWISS
Deal found 9/9$371
This Mytrip deal was found by Cheapflights users on 9/9. 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.
Tue 9/236:00 amOTP - IAD
1 stop14h 30mLufthansa
Sat 9/273:25 pmIAD - OTP
1 stop19h 30mLufthansa
Deal found 9/9$395
This Mytrip deal was found by Cheapflights users on 9/10. 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.
Wed 9/246:30 amOTP - IAD
1 stop16h 45mSWISS
Fri 9/268:45 pmIAD - OTP
1 stop21h 20mSWISS
Deal found 9/10$406
This Billigflug deal was found by Cheapflights users on 9/9. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:00 amOTP - IAD
1 stop16h 50mMultiple Airlines
Thu 10/307:00 pmIAD - OTP
1 stop11h 30mMultiple Airlines
Deal found 9/9$435
This Booking.com deal was found by Cheapflights users on 9/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/76:00 amOTP - IAD
1 stop16h 50mLufthansa
Tue 10/1410:20 pmIAD - OTP
1 stop13h 15mLufthansa
Deal found 9/9$439
This Mytrip deal was found by Cheapflights users on 9/10. 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.
Wed 10/86:00 amOTP - IAD
1 stop16h 50mLufthansa
Mon 10/2010:20 pmIAD - OTP
1 stop13h 15mLufthansa
Deal found 9/10$440
This Mytrip deal was found by Cheapflights users on 9/10. 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 10/66:00 amOTP - IAD
1 stop14h 30mLufthansa
Sun 10/196:10 pmIAD - OTP
1 stop16h 45mLufthansa
Deal found 9/10$441
This Gotogate deal was found by Cheapflights users on 9/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/241:55 pmOTP - IAD
1 stop13h 05mMultiple Airlines
Fri 11/148:30 pmIAD - OTP
1 stop21h 00mMultiple Airlines
Deal found 9/9$442
This Gotogate deal was found by Cheapflights users on 9/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:00 amOTP - IAD
1 stop16h 50mLufthansa
Fri 11/1410:55 pmIAD - OTP
1 stop12h 40mLufthansa
Deal found 9/10$443
This KLM deal was found by Cheapflights users on 9/9. 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.
Mon 9/298:35 amOTP - IAD
1 stop14h 00mMultiple Airlines
Mon 10/206:30 pmIAD - OTP
1 stop18h 40mMultiple Airlines
Deal found 9/9$444
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/96:00 amOTP - IAD
1 stop14h 30mUnited Airlines
Wed 10/2210:20 pmIAD - OTP
1 stop13h 15mUnited Airlines
Deal found 9/10$445

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 September 11, 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

Wed 10/8

6:00 am-3:50 pm

1 stop16h 50m

Washington, D.C. Dulles Intl

Mon 10/20

10:20 pm-6:35 pm

1 stop13h 15m

$440

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Thu 10/16

6:00 am-1:30 pm

1 stop14h 30m

Washington, D.C. Dulles Intl

Thu 10/30

11:55 pm-6:35 pm

1 stop12h 40m

$441

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Sat 11/22

5:55 am-3:50 pm

1 stop16h 55m

Washington, D.C. Dulles Intl

Sat 12/6

8:30 pm-3:50 pm

1 stop12h 20m

$443

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Fri 10/24

6:00 am-3:50 pm

1 stop16h 50m

Washington, D.C. Dulles Intl

Fri 11/14

10:55 pm-6:35 pm

1 stop12h 40m

$443

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Sat 11/22

5:55 am-8:54 pm

2 stops21h 59m

Washington, D.C. Dulles Intl

Sat 12/6

9:45 am-3:50 pm

2 stops23h 05m

$444

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Thu 10/16

6:00 am-1:30 pm

1 stop14h 30m

Washington, D.C. Dulles Intl

Fri 10/31

11:55 pm-6:35 pm

1 stop12h 40m

$445

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Thu 2/26

5:50 am-2:35 pm

1 stop15h 45m

Washington, D.C. Dulles Intl

Mon 3/9

6:40 pm-6:35 pm

1 stop17h 55m

$446

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Sat 11/22

5:55 am-2:35 pm

1 stop15h 40m

Washington, D.C. Dulles Intl

Sat 12/6

12:50 pm-2:05 pm

2 stops18h 15m

$446

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Tue 3/3

5:55 am-8:15 pm

1 stop21h 20m

Washington, D.C. Dulles Intl

Mon 3/9

6:40 pm-6:35 pm

1 stop17h 55m

$446

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Sat 2/28

5:55 am-2:35 pm

1 stop15h 40m

Washington, D.C. Dulles Intl

Wed 3/11

5:20 pm-2:00 pm

2 stops14h 40m

$448

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 19 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

How far ahead should I book a flight from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Otopeni Intl to Dulles Intl. Price data was last updated on August 29, 2025.

To ensure you get the cheapest price possible for a flight from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport, you should look to book at least 83 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August 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 $292). 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 September 11, 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 September 11, 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
850 reviews

Comfort

7.3

Entertainment

6.8

Overall

7.6

Food

6.8

Crew

8.1

Boarding

7.6

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
850 reviews
Austrian Airlines
7.6
Good
850 reviews

Comfort

7.3

Entertainment

6.8

Overall

7.6

Food

6.8

Crew

8.1

Boarding

7.6

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!
United Airlines
7.4
Good
8,937 reviews
Austrian Airlines
7.6
Good
850 reviews

Comfort

7.3

Entertainment

6.8

Overall

7.6

Food

6.8

Crew

8.1

Boarding

7.6

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
3,968 reviews
Austrian Airlines
7.6
Good
850 reviews

Comfort

7.3

Entertainment

6.8

Overall

7.6

Food

6.8

Crew

8.1

Boarding

7.6

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
7,409 reviews
Austrian Airlines
7.6
Good
850 reviews

Comfort

7.3

Entertainment

6.8

Overall

7.6

Food

6.8

Crew

8.1

Boarding

7.6

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
7,361 reviews
Austrian Airlines
7.6
Good
850 reviews

Comfort

7.3

Entertainment

6.8

Overall

7.6

Food

6.8

Crew

8.1

Boarding

7.6

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 50m. Fly via Lufthansa or Air Canada 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 British Airways, from $461. 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, August 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 $292). 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
Alexandria
Arlington
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
Dundalk
National Harbor

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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 Reagan-National flights
Otopeni Intl to Baltimore 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$418Average$695FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$448Average$778FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$461Average$622FlexibilityNo cancel feeOn-time70%
Austrian AirlinesCheapest$481Average$611FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$489Average$782FlexibilityNo cancel feeOn-time76%
KLMCheapest$514Average$737FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$559Average$619FlexibilityNo cancel feeOn-time77%

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