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Cheap flights from Seattle to Bucharest from $489

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Bucharest departing on 12/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Bucharest

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
1:35 pm - 3:10 pm
SEA
-
OTP
15h 35m1 stop
British Airways Logo
8:05 am - 4:55 pm
OTP
-
SEA
18h 50m1 stop
$513British Airways
Fri, Jan 16 - Sat, Jan 31
Multiple Airlines Logo
3:10 pm - 1:05 am
SEA
-
OTP
23h 55m1 stop
Multiple Airlines Logo
5:55 am - 10:06 pm
OTP
-
SEA
26h 11m2 stops
$519Multiple Airlines
Fri, Jan 23 - Fri, Jan 30
Multiple Airlines Logo
8:10 am - 3:50 pm
SEA
-
OTP
21h 40m2 stops
Multiple Airlines Logo
5:55 am - 7:16 pm
OTP
-
SEA
23h 21m2 stops
$531Multiple Airlines
Fri, Jan 23 - Fri, Jan 30
Multiple Airlines Logo
2:10 pm - 8:10 pm
SEA
-
OTP
20h 00m1 stop
Multiple Airlines Logo
1:55 pm - 11:50 am
OTP
-
SEA
31h 55m1 stop
$534Multiple Airlines
Fri, Jan 23 - Fri, Jan 30
Lufthansa Logo
3:10 pm - 1:05 am
SEA
-
OTP
23h 55m1 stop
Lufthansa Logo
5:55 am - 6:14 pm
OTP
-
SEA
22h 19m2 stops
$536Lufthansa
Fri, Jan 16 - Sat, Jan 31
British Airways Logo
6:50 pm - 11:30 pm
SEA
-
OTP
18h 40m1 stop
British Airways Logo
7:35 am - 4:55 pm
OTP
-
SEA
19h 20m1 stop
$538British Airways
Wed, Jan 14 - Sun, Jan 18
Lufthansa Logo
7:00 am - 11:50 pm
SEA
-
OTP
30h 50m2 stops
Lufthansa Logo
5:55 am - 6:14 pm
OTP
-
SEA
22h 19m2 stops
$547Lufthansa
Fri, Jan 16 - Sat, Jan 31
United Airlines Logo
6:03 am - 2:00 pm
SEA
-
OTP
21h 57m2 stops
United Airlines Logo
5:55 am - 4:01 pm
OTP
-
SEA
20h 06m2 stops
$562United Airlines
Wed, Jan 14 - Sun, Jan 18
United Airlines Logo
12:57 pm - 2:05 pm
SEA
-
OTP
39h 08m3 stops
United Airlines Logo
5:55 am - 6:14 pm
OTP
-
SEA
22h 19m2 stops
$573United Airlines
Fri, Jan 16 - Sat, Jan 31
United Airlines Logo
7:00 am - 2:00 pm
SEA
-
OTP
21h 00m2 stops
United Airlines Logo
2:50 pm - 10:43 pm
OTP
-
SEA
41h 53m2 stops
$582United Airlines
Wed, Jan 14 - Sun, Jan 18

United Airlines flights from Seattle to Bucharest Otopeni Intl Airport

Our best United Airlines deals on Seattle to Bucharest Otopeni Intl Airport flight tickets
United Airlines
Jan 14
SEA6:03 amSeattle/Tacoma Intl
21h 57m
2 stops
OTP2:00 pmBucharest Otopeni Intl
Jan 18
OTP5:55 amBucharest Otopeni Intl
20h 06m
2 stops
SEA4:01 pmSeattle/Tacoma Intl
$562
Find similar
United Airlines
Jan 16
SEA12:57 pmSeattle/Tacoma Intl
39h 08m
3 stops
OTP2:05 pmBucharest Otopeni Intl
Jan 31
OTP5:55 amBucharest Otopeni Intl
22h 19m
2 stops
SEA6:14 pmSeattle/Tacoma Intl
$573
Find similar
United Airlines
Jan 14
SEA7:00 amSeattle/Tacoma Intl
21h 00m
2 stops
OTP2:00 pmBucharest Otopeni Intl
Jan 18
OTP2:50 pmBucharest Otopeni Intl
41h 53m
2 stops
SEA10:43 pmSeattle/Tacoma Intl
$582
Find similar

British Airways flights from Seattle to Bucharest Otopeni Intl Airport

Our best British Airways deals on Seattle to Bucharest Otopeni Intl Airport flight tickets
British Airways
Jan 16
SEA1:35 pmSeattle/Tacoma Intl
15h 35m
1 stop
OTP3:10 pmBucharest Otopeni Intl
Jan 31
OTP8:05 amBucharest Otopeni Intl
18h 50m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$513
Find similar
British Airways
Jan 14
SEA6:50 pmSeattle/Tacoma Intl
18h 40m
1 stop
OTP11:30 pmBucharest Otopeni Intl
Jan 18
OTP7:35 amBucharest Otopeni Intl
19h 20m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$538
Find similar
British Airways
Jan 14
SEA5:45 pmSeattle/Tacoma Intl
19h 45m
2 stops
OTP11:30 pmBucharest Otopeni Intl
Jan 18
OTP7:35 amBucharest Otopeni Intl
19h 20m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$738
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Bucharest Otopeni Intl Airport 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, momondo users made 832,500 searches. Data last updated December 10, 2025.
Use the filters below to find and compare flights from Seattle to Bucharest Otopeni Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Fri 1/16

1:35 pm-3:10 pm

1 stop15h 35m

Bucharest Otopeni Intl

Sat 1/31

8:05 am-4:55 pm

1 stop18h 50m

$513

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Fri 1/23

3:10 pm-1:05 am

1 stop23h 55m

Bucharest Otopeni Intl

Fri 1/30

5:55 am-10:06 pm

2 stops26h 11m

$519

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Fri 1/23

8:10 am-3:50 pm

2 stops21h 40m

Bucharest Otopeni Intl

Fri 1/30

5:55 am-7:16 pm

2 stops23h 21m

$531

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Fri 1/23

2:10 pm-8:10 pm

1 stop20h 00m

Bucharest Otopeni Intl

Fri 1/30

1:55 pm-11:50 am

1 stop31h 55m

$534

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Fri 1/16

3:10 pm-1:05 am

1 stop23h 55m

Bucharest Otopeni Intl

Sat 1/31

5:55 am-6:14 pm

2 stops22h 19m

$536

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Wed 1/14

6:50 pm-11:30 pm

1 stop18h 40m

Bucharest Otopeni Intl

Sun 1/18

7:35 am-4:55 pm

1 stop19h 20m

$538

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Fri 1/16

7:00 am-11:50 pm

2 stops30h 50m

Bucharest Otopeni Intl

Sat 1/31

5:55 am-6:14 pm

2 stops22h 19m

$547

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Wed 1/14

6:03 am-2:00 pm

2 stops21h 57m

Bucharest Otopeni Intl

Sun 1/18

5:55 am-4:01 pm

2 stops20h 06m

$562

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Fri 1/16

12:57 pm-2:05 pm

3 stops39h 08m

Bucharest Otopeni Intl

Sat 1/31

5:55 am-6:14 pm

2 stops22h 19m

$573

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Wed 1/14

7:00 am-2:00 pm

2 stops21h 00m

Bucharest Otopeni Intl

Sun 1/18

2:50 pm-10:43 pm

2 stops41h 53m

$582

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bucharest from

How to get the cheapest flight ticket from Seattle to Bucharest Otopeni Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Bucharest Otopeni Intl Airport?

If you aren’t able to travel during the month of October, then book flights to Bucharest Otopeni Intl Airport from Seattle during September instead. Flights to Bucharest Otopeni Intl Airport in September, while not as cheap as those in October, still average around $709.

What is the cheapest day to depart on your flight to Bucharest Otopeni Intl Airport?

Our data shows that Sunday is the least expensive day to fly to Bucharest Otopeni Intl Airport. Tickets to fly out on this day can be as low as $879. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Bucharest Otopeni Intl Airport for around $1,246.

What is the cheapest time of day to depart on your flight to Bucharest Otopeni Intl Airport?

Our most recent data shows that the best time of day to fly to Bucharest Otopeni Intl Airport is in the morning. Flights from Seattle to Bucharest Otopeni Intl Airport during this time can be as low as $812. In the evening is when there is more demand to fly to Bucharest Otopeni Intl Airport, so prices are often more expensive at around $2,198 per ticket.

How far in advance should I book a flight to Bucharest Otopeni Intl Airport?

You are more likely to see cheaper flights to Bucharest Otopeni Intl Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Bucharest Otopeni Intl Airport for around $950 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bucharest Otopeni Intl Airport from Seattle for as low as $617 on momondo.

Can stopping save me money on Seattle to Bucharest Otopeni Intl Airport flights?

You could potentially save up to 23% on your flight if you consider stops on a Seattle to Bucharest Otopeni Intl Airport flight.

How have Seattle to Bucharest Otopeni Intl Airport flight prices changed over time?

When to book flights from Seattle to Bucharest Otopeni Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Bucharest Otopeni Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Bucharest Otopeni Intl Airport (SEA to OTP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Bucharest Otopeni Intl Airport

Fastest flight time

15h 15m

Direct flights

None
The fastest flight from Seattle to Bucharest Otopeni Intl Airport takes 15h 15m
There are no direct flights from Seattle to Bucharest Otopeni Intl Airport. There are no popular flight routes from Seattle to Bucharest Otopeni Intl Airport.
Search flight deals

  • How far is Seattle/Tacoma Intl to Bucharest Otopeni Intl by plane?

    There are 5781.4 mi between Seattle/Tacoma Intl and Bucharest Otopeni Intl. A reasonable flight in good conditions will take 15h 15m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport.

  • What documentation or ID do you need to fly to Bucharest Otopeni Intl Airport?

    The travel and health documents you'll need for your trip to Bucharest Otopeni Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bucharest Otopeni Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Bucharest Otopeni Intl Airport?

Best airlines flying from Seattle to Bucharest Otopeni Intl Airport

Compare and see reviews for airlines that fly from Seattle to Bucharest Otopeni Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $553Free CancellationRating
6.7
7,573 reviews
Search British Airways flights
LufthansaPriceFrom $581Free CancellationRating
6.8
7,622 reviews
Search Lufthansa flights
United AirlinesPriceFrom $585Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $591Free CancellationRating
7.3
4,088 reviews
Search Turkish Airlines flights
KLMPriceFrom $656Free CancellationRating
7.7
1,431 reviews
Search KLM flights
Air FrancePriceFrom $699Free CancellationRating
7.4
1,502 reviews
Search Air France flights
DeltaPriceFrom $772Free CancellationRating
7.9
8,007 reviews
Search Delta flights

Traveling to a place near Bucharest?

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

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Bucharest?

It is quick and easy to find Seattle to Bucharest flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Bucharest that suits you.

Can I find flights from Seattle to Bucharest with flexible booking policies on momondo?

All flight searches from Seattle to Bucharest on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Bucharest?

momondo helps you find the best flight between Seattle and Bucharest by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to Bucharest right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Bucharest now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Bucharest and let you know when they change.

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