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Cheap flights from Seattle to Bucharest from $245

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 5/13. 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
1:37 pm - 1:20 am
SEA
-
OTP
25h 43m
2 stops
British Airways Logo
6:10 pm - 11:35 am
OTP
-
SEA
27h 25m
1 stop
$535British Airways
Tue, Mar 31 - Tue, Apr 7
British Airways Logo
1:35 pm - 12:20 am
SEA
-
OTP
24h 45m
1 stop
British Airways Logo
3:40 pm - 11:35 am
OTP
-
SEA
29h 55m
1 stop
$537British Airways
Wed, Apr 22 - Mon, Apr 27
KLM Logo
1:45 pm - 3:25 pm
SEA
-
OTP
15h 40m
1 stop
KLM Logo
2:00 pm - 11:45 am
OTP
-
SEA
31h 45m
1 stop
$540KLM
Tue, Mar 31 - Tue, Apr 7
Lufthansa Logo
6:50 pm - 6:35 pm
SEA
-
OTP
13h 45m
1 stop
Lufthansa Logo
6:05 am - 11:55 am
OTP
-
SEA
15h 50m
1 stop
$546Lufthansa
Wed, Jul 29 - Tue, Sep 8
British Airways Logo
1:35 pm - 1:20 am
SEA
-
OTP
25h 45m
1 stop
British Airways Logo
3:40 pm - 6:25 pm
OTP
-
SEA
36h 45m
1 stop
$550British Airways
Tue, Jul 28 - Thu, Sep 10
Multiple Airlines Logo
8:00 am - 4:20 pm
SEA
-
OTP
22h 20m
2 stops
Multiple Airlines Logo
6:05 am - 11:55 am
OTP
-
SEA
15h 50m
1 stop
$551Multiple Airlines
Tue, Jul 28 - Thu, Sep 10
United Airlines Logo
10:50 am - 4:20 pm
SEA
-
OTP
19h 30m
2 stops
United Airlines Logo
6:05 am - 11:28 pm
OTP
-
SEA
27h 23m
2 stops
$552United Airlines
Mon, Aug 3 - Thu, Aug 20
United Airlines Logo
6:50 pm - 1:10 am
SEA
-
OTP
20h 20m
1 stop
United Airlines Logo
6:05 am - 12:20 pm
OTP
-
SEA
16h 15m
1 stop
$553United Airlines
Wed, May 13 - Fri, May 15
British Airways Logo
1:37 pm - 1:20 am
SEA
-
OTP
25h 43m
2 stops
British Airways Logo
8:15 am - 12:30 am
OTP
-
SEA
26h 15m
2 stops
$555British Airways
Tue, Mar 31 - Tue, Apr 7
United Airlines Logo
7:00 am - 1:10 am
SEA
-
OTP
32h 10m
2 stops
United Airlines Logo
6:05 am - 9:52 am
OTP
-
SEA
37h 47m
2 stops
$556United Airlines
Tue, Jul 28 - Thu, Sep 10

Delta flights from Seattle to Bucharest Otopeni Intl Airport

Our best Delta deals on Seattle to Bucharest Otopeni Intl Airport flight tickets
Delta
Apr 22
SEA11:10 amSeattle/Tacoma Intl
20h 10m
2 stops
OTP5:20 pmBucharest Otopeni Intl
Apr 27
OTP7:05 amBucharest Otopeni Intl
20h 11m
2 stops
SEA5:16 pmSeattle/Tacoma Intl
$606
Delta
Mar 29
SEA11:25 amSeattle/Tacoma Intl
19h 55m
2 stops
OTP5:20 pmBucharest Otopeni Intl
Apr 5
OTP7:05 amBucharest Otopeni Intl
14h 40m
1 stop
SEA11:45 amSeattle/Tacoma Intl
$652
Delta
Feb 25
SEA2:15 pmSeattle/Tacoma Intl
22h 35m
1 stop
OTP10:50 pmBucharest Otopeni Intl
Mar 25
OTP6:00 amBucharest Otopeni Intl
20h 09m
2 stops
SEA5:09 pmSeattle/Tacoma Intl
$693

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
Mar 31
SEA1:37 pmSeattle/Tacoma Intl
25h 43m
2 stops
OTP1:20 amBucharest Otopeni Intl
Apr 7
OTP6:10 pmBucharest Otopeni Intl
27h 25m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$535
British Airways
Apr 22
SEA1:35 pmSeattle/Tacoma Intl
24h 45m
1 stop
OTP12:20 amBucharest Otopeni Intl
Apr 27
OTP3:40 pmBucharest Otopeni Intl
29h 55m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$537
British Airways
Mar 31
SEA1:37 pmSeattle/Tacoma Intl
25h 43m
2 stops
OTP1:20 amBucharest Otopeni Intl
Apr 7
OTP8:15 amBucharest Otopeni Intl
26h 15m
2 stops
SEA12:30 amSeattle/Tacoma Intl
$555

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 February 15, 2026.
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

Tue 3/31

1:37 pm-1:20 am

2 stops25h 43m

Bucharest Otopeni Intl

Tue 4/7

6:10 pm-11:35 am

1 stop27h 25m

$535

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Wed 4/22

1:35 pm-12:20 am

1 stop24h 45m

Bucharest Otopeni Intl

Mon 4/27

3:40 pm-11:35 am

1 stop29h 55m

$537

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 3/31

1:45 pm-3:25 pm

1 stop15h 40m

Bucharest Otopeni Intl

Tue 4/7

2:00 pm-11:45 am

1 stop31h 45m

$540

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Wed 7/29

6:50 pm-6:35 pm

1 stop13h 45m

Bucharest Otopeni Intl

Tue 9/8

6:05 am-11:55 am

1 stop15h 50m

$546

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 7/28

1:35 pm-1:20 am

1 stop25h 45m

Bucharest Otopeni Intl

Thu 9/10

3:40 pm-6:25 pm

1 stop36h 45m

$550

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 7/28

8:00 am-4:20 pm

2 stops22h 20m

Bucharest Otopeni Intl

Thu 9/10

6:05 am-11:55 am

1 stop15h 50m

$551

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Mon 8/3

10:50 am-4:20 pm

2 stops19h 30m

Bucharest Otopeni Intl

Thu 8/20

6:05 am-11:28 pm

2 stops27h 23m

$552

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Wed 5/13

6:50 pm-1:10 am

1 stop20h 20m

Bucharest Otopeni Intl

Fri 5/15

6:05 am-12:20 pm

1 stop16h 15m

$553

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 3/31

1:37 pm-1:20 am

2 stops25h 43m

Bucharest Otopeni Intl

Tue 4/7

8:15 am-12:30 am

2 stops26h 15m

$555

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 7/28

7:00 am-1:10 am

2 stops32h 10m

Bucharest Otopeni Intl

Thu 9/10

6:05 am-9:52 am

2 stops37h 47m

$556

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 January, then book flights to Bucharest Otopeni Intl Airport from Seattle during October instead. Flights to Bucharest Otopeni Intl Airport in October, while not as cheap as those in January, still average around $624.

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 $822 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 $584 on momondo.

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

You could potentially save up to 37% 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

17h 45m

Direct flights

None
The fastest flight from Seattle to Bucharest Otopeni Intl Airport takes 17h 45m
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 17h 45m.

  • 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 $539Free CancellationRating
6.7
7,744 reviews
Search British Airways flights
LufthansaPriceFrom $565Free CancellationRating
6.8
7,786 reviews
Search Lufthansa flights
KLMPriceFrom $584Free CancellationRating
7.7
1,454 reviews
Search KLM flights
United AirlinesPriceFrom $585Free CancellationRating
7.4
9,293 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $587Free CancellationRating
7.3
4,216 reviews
Search Turkish Airlines flights
Air FrancePriceFrom $699Free CancellationRating
7.4
1,534 reviews
Search Air France flights
DeltaPriceFrom $772Free CancellationRating
7.9
8,205 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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