HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Brownsville

$379+ Cheap flights from Seattle to Brownsville (SEA - BRO)

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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRO
Sep 3 — Sep 101
Thu 9/3
Thu 9/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Brownsville with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 August 4, 2026.

This United Airlines deal was found by Cheapflights users on 8/2. 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.
Fri 8/2811:59 pm -
1 stop9h 24m
Mon 8/317:15 am -
1 stop7h 33m
Deal found 8/2$379
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2912:25 am -
1 stop7h 40m
Tue 11/35:49 am -
1 stop7h 23m
Deal found 7/30$399
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/37:00 am -
1 stop9h 13m
Tue 9/87:15 am -
1 stop9h 37m
Deal found 8/3$408
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Sat 10/311:59 pm -
1 stop9h 24m
Sat 10/107:15 am -
1 stop9h 34m
Deal found 8/3$419
This United Airlines deal was found by Cheapflights users on 7/30. 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 8/1912:10 pm -
1 stop7h 49m
Sat 8/2212:05 pm -
2 stops10h 38m
Deal found 7/30$424
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Sat 8/157:00 am -
2 stops12h 59m
Tue 8/187:15 am -
1 stop7h 33m
Deal found 8/1$464

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 August 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$379
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$378
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
High demand for flights, 2% potential price rise
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
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 August 4, 2026.
Use the filters below to find and compare flights from Seattle to Brownsville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Sat 9/19

7:00 am-6:13 pm

1 stop9h 13m

Brownsville South Padre Is. Intl

Sat 9/26

7:15 am-2:49 pm

1 stop9h 34m

$379

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Thu 9/3

7:00 am-6:13 pm

1 stop9h 13m

Brownsville South Padre Is. Intl

Tue 9/8

12:05 pm-7:08 pm

1 stop9h 03m

$379

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Fri 8/28

11:59 pm-11:23 am

1 stop9h 24m

Brownsville South Padre Is. Intl

Mon 8/31

9:20 am-5:42 pm

2 stops10h 22m

$384
Quickest round-trip

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Thu 10/29

12:25 am-10:05 am

1 stop7h 40m

Brownsville South Padre Is. Intl

Tue 11/3

5:49 am-11:12 am

1 stop7h 23m

$399

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Wed 8/19

12:10 pm-9:59 pm

1 stop7h 49m

Brownsville South Padre Is. Intl

Sat 8/22

7:15 am-2:52 pm

1 stop9h 37m

$474

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Sat 9/5

11:59 pm-11:23 am

1 stop9h 24m

Brownsville South Padre Is. Intl

Wed 9/9

12:05 pm-7:08 pm

1 stop9h 03m

$489

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/4

Sorted by cheapest first

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 August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 Seattle-Brownsville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Brownsville flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 $328). Flying from Seattle to Brownsville in December is currently the most expensive (average of $722). 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 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 August 4, 2026.
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
10,059 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Isaac,May 2024

SHV - IAH

Flight from shv was great. My connecting flight was canceled though. Had to stay overnight in airport
United Airlines
7.4
Good
10,059 reviews
United Airlines
7.4
Good
10,059 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Isaac,May 2024

SHV - IAH

Flight from shv was great. My connecting flight was canceled though. Had to stay overnight in airport
American Airlines
7.1
Good
11,845 reviews
United Airlines
7.4
Good
10,059 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Isaac,May 2024

SHV - IAH

Flight from shv was great. My connecting flight was canceled though. Had to stay overnight in airport

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?

    United Airlines and American Airlines can get you from Seattle to Brownsville in just under 7h 40m. Your travel time can differ by up to 1h 33m. 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 $308. Another airline that can offer you cheap pricing is United Airlines. You may be able to fly from Seattle to Brownsville for 39% 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 $328). Flying from Seattle to Brownsville in December is currently the most expensive (average of $722). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 August 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$308Average$462FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$338Average$620FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.