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$175+ Cheap flights from Seattle to Brownsville (SEA - BRO)

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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRO
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Seattle to Brownsville

Cheapest flights from Seattle to Brownsville
Explore the most affordable flight options available from Seattle to Brownsville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/316:45 amSEA - BRO
1 stop7h 22mUnited Airlines
Fri 1/95:25 pmBRO - SEA
1 stop7h 34mUnited Airlines
Deal found 12/17$449
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/316:45 amSEA - BRO
1 stop7h 22mUnited Airlines
Thu 1/89:30 amBRO - SEA
2 stops10h 56mUnited Airlines
Deal found 12/17$454
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/316:45 amSEA - BRO
1 stop7h 22mUnited Airlines
Wed 1/77:15 amBRO - SEA
3 stops15h 57mUnited Airlines
Deal found 12/17$459
This Alaska Airlines deal was found by Cheapflights users on 12/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:05 amSEA - BRO
1 stop7h 04mAlaska Airlines
Tue 1/63:18 pmBRO - SEA
1 stop9h 12mAlaska Airlines
Deal found 12/17$540
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/315:00 amSEA - BRO
1 stop9h 07mUnited Airlines
Tue 1/65:25 pmBRO - SEA
2 stops24h 36mUnited Airlines
Deal found 12/17$572
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/1711:59 pmSEA - BRO
1 stop9h 27mUnited Airlines
Thu 12/257:15 amBRO - SEA
1 stop7h 34mUnited Airlines
Deal found 12/17$590
This Alaska Airlines deal was found by Cheapflights users on 12/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:05 amSEA - BRO
1 stop7h 04mAlaska Airlines
Sat 1/106:00 amBRO - SEA
1 stop8h 39mAlaska Airlines
Deal found 12/17$591
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/1711:59 pmSEA - BRO
1 stop9h 27mUnited Airlines
Wed 12/245:10 amBRO - SEA
2 stops14h 56mUnited Airlines
Deal found 12/17$595
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/1711:59 pmSEA - BRO
1 stop9h 27mUnited Airlines
Fri 12/265:10 amBRO - SEA
1 stop9h 37mUnited Airlines
Deal found 12/17$605
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/246:45 amSEA - BRO
1 stop7h 22mUnited Airlines
Thu 12/255:10 amBRO - SEA
1 stop9h 39mUnited Airlines
Deal found 12/17$624
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/181:45 pmSEA - BRO
1 stop7h 52mUnited Airlines
Thu 12/257:15 amBRO - SEA
1 stop7h 34mUnited Airlines
Deal found 12/17$629

Find flight deals from Seattle to Brownsville

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Brownsville (BRO). 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$329
(American Airlines)

One-way from

$175
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$820
Provider with most accurate pricing for Seattle/Tacoma Intl-Brownsville South Padre Is. Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Brownsville South Padre Is. Intl flights.
Search Deals
From Seattle/Tacoma Intl to Brownsville South Padre Is. Intl
Search Deals
One-way flight from Seattle/Tacoma Intl to Brownsville South Padre Is. Intl
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($5 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Brownsville 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 December 18, 2025.
Use the filters below to find and compare flights from Seattle to Brownsville that are best for you.

Fly from

Seattle

Fly to

Brownsville

Route

Depart

Return

Price

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Wed 1/21

10:00 am-11:33 pm

2 stops11h 33m

Brownsville South Padre Is. Intl

Sat 1/24

6:00 am-1:49 pm

2 stops9h 49m

$339

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Wed 2/25

6:45 am-6:02 pm

1 stop9h 17m

Brownsville South Padre Is. Intl

Mon 3/2

5:25 pm-11:00 pm

1 stop7h 35m

$392

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Wed 1/28

8:23 am-6:19 pm

1 stop7h 56m

Brownsville South Padre Is. Intl

Sat 1/31

6:00 am-12:39 pm

1 stop8h 39m

$429

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Thu 1/8

12:57 pm-9:31 pm

1 stop6h 34m

Brownsville South Padre Is. Intl

Tue 1/13

7:15 am-12:49 pm

1 stop7h 34m

$429

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Wed 1/7

12:57 pm-9:31 pm

1 stop6h 34m

Brownsville South Padre Is. Intl

Thu 1/15

7:15 am-12:49 pm

1 stop7h 34m

$429

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Wed 1/28

12:57 pm-9:31 pm

1 stop6h 34m

Brownsville South Padre Is. Intl

Sat 1/31

7:15 am-12:49 pm

1 stop7h 34m

$429

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Fri 1/9

12:57 pm-9:31 pm

1 stop6h 34m

Brownsville South Padre Is. Intl

Sat 1/17

7:15 am-3:44 pm

2 stops10h 29m

$434

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Thu 1/8

12:57 pm-9:31 pm

1 stop6h 34m

Brownsville South Padre Is. Intl

Wed 1/14

7:15 am-6:27 pm

2 stops13h 12m

$434

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Sat 1/31

6:48 am-6:02 pm

1 stop9h 14m

Brownsville South Padre Is. Intl

Tue 2/3

9:30 am-9:12 pm

2 stops13h 42m

$434

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Thu 1/8

7:00 am-4:12 pm

1 stop7h 12m

Brownsville South Padre Is. Intl

Fri 1/16

12:13 pm-9:12 pm

2 stops10h 59m

$434

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 19 results
1
2

Compare providers for flights from Seattle to Brownsville

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 Brownsville in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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-Brownsville flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Brownsville flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Brownsville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Brownsville 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-Brownsville 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 Brownsville

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

What is the cheapest month to book a flight from Seattle to Brownsville?

Currently, January is the cheapest month in which you can book a flight from Seattle to Brownsville (average of $204). Flying from Seattle to Brownsville in July is currently the most expensive (average of $369). 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 BRO?

Find hourly flight availability from Seattle to Brownsville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Brownsville at noon. If you’re flexible enough to do this you can expect to save up to 38% on your trip compared to booking a flight in the morning.

Reviews of airlines servicing Brownsville

Get insights into the airlines that provide service to Brownsville. 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 Brownsville. Reviews last updated December 18, 2025.
Get a feel of what it's like to fly with United Airlines and American Airlines from Seattle to Brownsville by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,091 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
United Airlines
7.4
Good
9,091 reviews
United Airlines
7.4
Good
9,091 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
American Airlines
7.2
Good
11,054 reviews
United Airlines
7.4
Good
9,091 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours

Related info for your journey

Find useful and relevant information for your journey from Seattle to Brownsville. 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 Seattle to Brownsville?

    American Airlines and United Airlines can get you from Seattle to Brownsville in just under 9h 17m. Your travel time can differ by up to 2h 16m. Seattle and Brownsville are separated by a distance of 2010 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seattle to Brownsville round-trip?

    Cheapflights users have booked flights from Seattle to Brownsville round-trip from $266. Another airline that can offer you cheap pricing is United Airlines. You may be able to fly from Seattle to Brownsville for 46% less than the average price by searching for these airlines.

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

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

  • How can I find direct flights from Seattle to Brownsville?

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

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

    Yes. Cheapflights offers flight deals from Seattle to Brownsville 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 Brownsville?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Brownsville (average of $204). Flying from Seattle to Brownsville in July is currently the most expensive (average of $369). 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

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Top 2 airlines flying from Seattle to Brownsville

Discover the top 2 airlines that operate flights from Seattle to Brownsville. 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$266Average$456FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$282Average$522FlexibilityNo cancel feeOn-time69%

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