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$666+ Cheap flights from Otopeni Intl (OTP) to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — SEA
ene. 11 — ene. 181
dom. 1/11
dom. 1/18
1 adult, Economy
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Cheap flight deals from Otopeni Intl to Seattle

Cheapest flights from Otopeni Intl to Seattle
Explore the most affordable flight options available from Otopeni Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.

This KLM deal was found by Cheapflights users on 12/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/201:55 pmOTP - SEA
1 stop31h 55mMultiple Airlines
dom. 1/42:10 pmSEA - OTP
1 stop20h 00mMultiple Airlines
Deal found 12/10$1,145
This KLM deal was found by Cheapflights users on 12/11. 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.
sáb. 12/206:00 pmOTP - SEA
1 stop27h 50mKLM
dom. 1/410:30 amSEA - OTP
2 stops16h 30mKLM
Deal found 12/11$1,195
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/206:05 amOTP - SEA
2 stops20h 40mDelta
dom. 1/47:25 amSEA - OTP
2 stops19h 35mDelta
Deal found 12/10$1,471

Find flight deals from Otopeni Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Otopeni Intl (OTP) to Seattle (SEA). 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 diciembre 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$666
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$854
Provider with most accurate pricing for Bucharest Otopeni Intl-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Bucharest Otopeni Intl-Seattle/Tacoma Intl flights.
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From Bucharest Otopeni Intl to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($143 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Otopeni Intl to Seattle 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 diciembre 12, 2025.
Use the filters below to find and compare flights from Bucharest Otopeni Intl Airport to Seattle that are best for you.

Fly from

Otopeni Intl

Fly to

Seattle

Route

Depart

Return

Price

BucharestSeattle

OTP - SEA

OTPSEA

Bucharest Otopeni Intl

mié. 1/14

4:30 am-5:00 pm

3 stops22h 30m

Seattle/Tacoma Intl

mié. 1/28

2:35 pm-12:30 am

3 stops23h 55m

$766

BucharestSeattle

OTP - SEA

OTPSEA

Bucharest Otopeni Intl

lun. 1/19

3:30 pm-5:05 pm

1 stop35h 35m

Seattle/Tacoma Intl

dom. 2/1

7:00 pm-8:50 am

1 stop27h 50m

$770

BucharestSeattle

OTP - SEA

OTPSEA

Bucharest Otopeni Intl

jue. 1/29

3:30 pm-5:05 pm

1 stop35h 35m

Seattle/Tacoma Intl

mié. 2/11

7:00 pm-2:10 pm

1 stop33h 10m

$770

BucharestSeattle

OTP - SEA

OTPSEA

Bucharest Otopeni Intl

lun. 1/26

3:30 pm-5:05 pm

1 stop35h 35m

Seattle/Tacoma Intl

lun. 2/2

7:00 pm-8:50 am

1 stop27h 50m

$775

BucharestSeattle

OTP - SEA

OTPSEA

Bucharest Otopeni Intl

jue. 1/22

3:30 pm-5:05 pm

1 stop35h 35m

Seattle/Tacoma Intl

lun. 1/26

7:00 pm-2:10 pm

1 stop33h 10m

$817

BucharestSeattle

OTP - SEA

OTPSEA

Bucharest Otopeni Intl

lun. 1/26

8:40 am-9:31 am

3 stops34h 51m

Seattle/Tacoma Intl

lun. 2/2

3:10 pm-10:00 am

3 stops32h 50m

$831

BucharestSeattle

OTP - SEA

OTPSEA

Bucharest Otopeni Intl

jue. 1/29

5:50 am-12:10 pm

1 stop16h 20m

Seattle/Tacoma Intl

mié. 2/11

7:00 am-12:30 pm

2 stops19h 30m

$864

BucharestSeattle

OTP - SEA

OTPSEA

Bucharest Otopeni Intl

jue. 1/15

5:50 am-12:10 pm

1 stop16h 20m

Seattle/Tacoma Intl

mié. 1/28

2:10 pm-6:35 pm

2 stops18h 25m

$868

BucharestSeattle

OTP - SEA

OTPSEA

Bucharest Otopeni Intl

dom. 1/25

6:05 am-1:20 pm

1 stop17h 15m

Seattle/Tacoma Intl

dom. 2/1

10:05 am-11:50 pm

2 stops27h 45m

$870

BucharestSeattle

OTP - SEA

OTPSEA

Bucharest Otopeni Intl

jue. 5/7

6:30 am-6:30 pm

2 stops22h 00m

Seattle/Tacoma Intl

jue. 5/28

1:45 pm-1:05 am

2 stops25h 20m

$872

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Compare providers for flights from Otopeni Intl to Seattle

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 Seattle in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 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 Bucharest Otopeni Intl Airport-Seattle 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-Seattle flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Bucharest Otopeni Intl Airport-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bucharest Otopeni Intl Airport-Seattle 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-Seattle 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 Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle 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 Seattle

What is the cheapest month to book a flight from Bucharest Otopeni Intl Airport to Seattle?

Currently, February is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to Seattle (average of $578). Flying from Bucharest Otopeni Intl Airport to Seattle in June is currently the most expensive (average of $847). 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 Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated diciembre 12, 2025.
Get a feel of what it's like to fly with Turkish Airlines and Lufthansa from Bucharest Otopeni Intl Airport to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Turkish Airlines
7.3
Good
4,089 reviews

Crew

7.8

Food

7.4

Comfort

7.3

Entertainment

7.4

Boarding

7.3

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Joel,Nov 2025

IST - IAD

The flight was fine except half the bathrooms in economy class were out of order and taped shut. Turkish Airlines had changed or ultimately canceled the flight to Istanbul several times and the vendor that kayak uses to purchase the tickets then canceled our reservations without informing us. When I called for a boarding pass 24 hours before the flight, we found out that our reservations have been canceled and had to act quickly to get new reservations at double the expense… Using the same vendor who had gotten reimbursed for the original flights.
Turkish Airlines
7.3
Good
4,089 reviews
Turkish Airlines
7.3
Good
4,089 reviews

Crew

7.8

Food

7.4

Comfort

7.3

Entertainment

7.4

Boarding

7.3

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Joel,Nov 2025

IST - IAD

The flight was fine except half the bathrooms in economy class were out of order and taped shut. Turkish Airlines had changed or ultimately canceled the flight to Istanbul several times and the vendor that kayak uses to purchase the tickets then canceled our reservations without informing us. When I called for a boarding pass 24 hours before the flight, we found out that our reservations have been canceled and had to act quickly to get new reservations at double the expense… Using the same vendor who had gotten reimbursed for the original flights.
Lufthansa
6.8
Okay
7,626 reviews
Turkish Airlines
7.3
Good
4,089 reviews

Crew

7.8

Food

7.4

Comfort

7.3

Entertainment

7.4

Boarding

7.3

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Joel,Nov 2025

IST - IAD

The flight was fine except half the bathrooms in economy class were out of order and taped shut. Turkish Airlines had changed or ultimately canceled the flight to Istanbul several times and the vendor that kayak uses to purchase the tickets then canceled our reservations without informing us. When I called for a boarding pass 24 hours before the flight, we found out that our reservations have been canceled and had to act quickly to get new reservations at double the expense… Using the same vendor who had gotten reimbursed for the original flights.

Related info for your journey

Find useful and relevant information for your journey from Otopeni Intl to Seattle. 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 into for flights to Seattle from Bucharest Otopeni Intl?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Bucharest Otopeni Intl to Seattle. 2 airlines have flights to Seattle/Tacoma Intl from Bucharest Otopeni Intl on a regular basis. Booking flights from Bucharest Otopeni Intl to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 0 inbound flights from Bucharest Otopeni Intl per day.

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

    Departing from Bucharest Otopeni Intl Airport to Seattle will take you 35h 35m. Airlines will cover a distance of 5791 mi.

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

    Cheapflights users have booked flights from Bucharest Otopeni Intl Airport to Seattle round-trip from $723. Another airline that can offer you cheap pricing is Lufthansa. You may be able to fly from Bucharest Otopeni Intl Airport to Seattle for 19% less than the average price by searching for these airlines.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to Seattle (average of $578). Flying from Bucharest Otopeni Intl Airport to Seattle in June is currently the most expensive (average of $847). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Olympia
Ocean Shores
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Tukwila
Kent
Cle Elum
Marysville
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Fife
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Shoreline
Centralia
Federal Way

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Alternative routes for Otopeni Intl to Seattle

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

Top 2 airlines flying from Otopeni Intl to Seattle

Discover the top 2 airlines that operate flights from Otopeni Intl to Seattle. 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 diciembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$723Average$835FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$808Average$955FlexibilityNo cancel feeOn-time76%

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