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Otopeni Intl

$320+ Cheap flights from Seattle (SEA) to Otopeni Intl (OTP)

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 11/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OTP
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Bucharest Otopeni Intl are usually found in September or October, booked 83 days in advance, depart on a Sunday or Saturday and return on a Saturday

Cheap flight deals from Seattle to Otopeni Intl

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Otopeni Intl (OTP). 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$533
(Cheapflightsfares)

One-way from

$320
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$684
Provider with most accurate pricing for Seattle/Tacoma Intl-Bucharest Otopeni Intl flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Bucharest Otopeni Intl flights.
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From Seattle/Tacoma Intl to Bucharest Otopeni Intl
Search Deals
One-way flight from Seattle/Tacoma Intl to Bucharest Otopeni Intl
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($270 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 13% potential price decrease ($115 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Seattle to Otopeni Intl

Cheapest flights from Seattle to Otopeni Intl
Explore the most affordable flight options available from Seattle to Otopeni Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/91:40 pmSEA - OTP
2 stops25h 25mLufthansa
Tue 12/165:55 amOTP - SEA
1 stop16h 15mLufthansa
Deal found 10/28$533
This Delta deal was found by Cheapflights users on 10/27. 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.
Wed 12/109:59 pmSEA - OTP
2 stops28h 06mDelta
Wed 12/241:55 pmOTP - SEA
1 stop31h 55mDelta
Deal found 10/27$538
This Delta deal was found by Cheapflights users on 10/27. 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.
Tue 12/92:05 pmSEA - OTP
2 stops22h 45mDelta
Tue 12/166:00 amOTP - SEA
2 stops21h 00mDelta
Deal found 10/27$549
This United deal was found by Cheapflights users on 10/27. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/98:10 amSEA - OTP
2 stops29h 45mMultiple Airlines
Tue 12/165:55 amOTP - SEA
1 stop16h 15mMultiple Airlines
Deal found 10/27$550
This KAYAK deal was found by Cheapflights users on 10/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:50 pmSEA - OTP
1 stop15h 10mBritish Airways
Thu 12/258:00 amOTP - SEA
1 stop18h 55mBritish Airways
Deal found 10/27$558
This oojo deal was found by Cheapflights users on 10/27. 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.
Wed 11/512:35 pmSEA - OTP
2 stops21h 45mTurkish Airlines
Wed 11/1910:10 amOTP - SEA
2 stops42h 42mTurkish Airlines
Deal found 10/27$573
This Mytrip deal was found by Cheapflights users on 10/27. 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 11/118:10 amSEA - OTP
2 stops29h 20mMultiple Airlines
Wed 11/193:35 pmOTP - SEA
2 stops30h 35mMultiple Airlines
Deal found 10/27$588
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/112:00 pmSEA - OTP
1 stop13h 55mLufthansa
Wed 11/196:05 amOTP - SEA
1 stop17h 15mLufthansa
Deal found 10/27$607
This oojo deal was found by Cheapflights users on 10/28. 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.
Tue 12/97:00 pmSEA - OTP
1 stop15h 20mTurkish Airlines
Tue 12/163:30 pmOTP - SEA
1 stop35h 35mTurkish Airlines
Deal found 10/28$615

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Otopeni 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 October 28, 2025.
Use the filters below to find and compare flights from Seattle to Bucharest Otopeni Intl Airport that are best for you.

Fly from

Seattle

Fly to

Otopeni Intl

Route

Depart

Return

Price

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 12/9

1:40 pm-1:05 am

2 stops25h 25m

Bucharest Otopeni Intl

Tue 12/16

5:55 am-12:10 pm

1 stop16h 15m

$533

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Wed 12/10

9:59 pm-12:05 pm

2 stops28h 06m

Bucharest Otopeni Intl

Wed 12/24

1:55 pm-11:50 am

1 stop31h 55m

$538

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 12/9

2:05 pm-10:50 pm

2 stops22h 45m

Bucharest Otopeni Intl

Tue 12/16

6:00 am-5:00 pm

2 stops21h 00m

$549

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 12/9

8:10 am-11:55 pm

2 stops29h 45m

Bucharest Otopeni Intl

Tue 12/16

5:55 am-12:10 pm

1 stop16h 15m

$550

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 12/9

7:00 pm-8:20 pm

1 stop15h 20m

Bucharest Otopeni Intl

Tue 12/16

3:30 pm-5:05 pm

1 stop35h 35m

$615

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Fri 3/27

4:10 pm-6:35 pm

1 stop17h 25m

Bucharest Otopeni Intl

Tue 3/31

6:00 am-11:55 am

1 stop15h 55m

$634

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Fri 3/27

4:10 pm-6:35 pm

1 stop17h 25m

Bucharest Otopeni Intl

Tue 3/31

6:00 am-11:55 am

1 stop15h 55m

$634

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Thu 4/2

8:00 pm-6:35 pm

2 stops36h 35m

Bucharest Otopeni Intl

Thu 4/23

6:00 am-11:55 am

1 stop15h 55m

$634

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Wed 11/26

11:26 am-10:25 pm

3 stops24h 59m

$320

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Wed 11/26

6:50 pm-11:30 pm

1 stop18h 40m

$436

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 11 results
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2

Compare providers for flights from Seattle to Otopeni 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 Seattle to Otopeni Intl in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust 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 Seattle-Bucharest Otopeni Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Bucharest Otopeni Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Bucharest Otopeni Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Bucharest Otopeni 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 Seattle-Bucharest Otopeni 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 Seattle to Otopeni Intl

Have a flexible travel schedule? Discover the best time to fly to Otopeni Intl from Seattle 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 Seattle to Bucharest Otopeni Intl Airport

How far ahead should I book a flight from Seattle to Bucharest Otopeni Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Otopeni Intl. Price data was last updated on October 24, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Bucharest Otopeni 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 Seattle to Bucharest Otopeni Intl Airport?

Currently, October is the cheapest month in which you can book a flight from Seattle to Bucharest Otopeni Intl Airport (average of $558). Flying from Seattle to Bucharest Otopeni Intl Airport in December is currently the most expensive (average of $896). 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 SEA to OTP?

Find hourly flight availability from Seattle to Otopeni Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 28, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Bucharest Otopeni Intl Airport in the morning. If you’re flexible enough to do this you can expect to save up to 63% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Seattle to Bucharest Otopeni Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Otopeni Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Bucharest Otopeni Intl Airport flight should consider departing on Friday mornings when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Otopeni Intl

Get insights into the airlines that provide service to Otopeni 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 Otopeni Intl. Reviews last updated October 28, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and United Airlines from Seattle to Bucharest Otopeni Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,994 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,994 reviews
Delta
7.9
Good
7,994 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
KLM
7.7
Good
1,406 reviews
Delta
7.9
Good
7,994 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
9,000 reviews
Delta
7.9
Good
7,994 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Turkish Airlines
7.3
Good
4,030 reviews
Delta
7.9
Good
7,994 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Lufthansa
6.8
Okay
7,533 reviews
Delta
7.9
Good
7,994 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

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

  • What airport do you fly from for flights from Seattle to Bucharest Otopeni Intl?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Bucharest Otopeni Intl. On average, Seattle/Tacoma Intl has 0 outbound flights to Bucharest Otopeni Intl per day from 5 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • How long is the flight from Seattle to Bucharest Otopeni Intl Airport?

    Departing from Seattle to Bucharest Otopeni Intl Airport will take you 25h 25m. Airlines will cover a distance of 5791 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Seattle to Bucharest Otopeni Intl Airport round-trip?

    United Airlines, at $585, was found to be the cheapest airline from Seattle to Bucharest Otopeni Intl Airport.Alternate airlines to your destination round-trip include Lufthansa and Turkish Airlines. United Airlines is currently priced 37% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Otopeni 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 Seattle to Bucharest Otopeni Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from Seattle to Bucharest Otopeni Intl Airport (average of $558). Flying from Seattle to Bucharest Otopeni Intl Airport in December is currently the most expensive (average of $896). 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 Bucharest Otopeni Intl Airport?

Book flights to Bucharest Otopeni Intl Airport if you plan to visit one of these locations
Otopeni

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Alternative routes for Seattle to Otopeni Intl

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Otopeni Intl flights

Top 5 airlines flying from Seattle to Otopeni Intl

Discover the top 5 airlines that operate flights from Seattle to Otopeni 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$585Average$1,121FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$585Average$966FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$596Average$1,064FlexibilityNo cancel feeOn-time77%
KLMCheapest$656Average$932FlexibilityNo cancel feeOn-time75%
DeltaCheapest$684Average$952FlexibilityNo cancel feeOn-timeN/A

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