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$343+ Cheap flights from San Antonio to Duluth (SAT - DLH)

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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — DLH
Jun 22 — Jun 291
Mon 6/22
Mon 6/29
1 adult, Economy
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Cheap flight deals from San Antonio to Duluth

Cheapest flights from San Antonio to Duluth
Explore the most affordable flight options available from San Antonio to Duluth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 23, 2026.

This Delta deal was found by Cheapflights users on 5/21. 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.
Tue 8/116:30 am
SAT
-
DLH
1 stop4h 31m
Delta
Sat 8/155:15 am
DLH
-
SAT
1 stop6h 34m
Delta
Deal found 5/21$343
This Delta deal was found by Cheapflights users on 5/18. 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.
Tue 7/146:05 pm
SAT
-
DLH
1 stop4h 44m
Delta
Sun 7/1911:50 am
DLH
-
SAT
1 stop5h 21m
Delta
Deal found 5/18$393
This United Airlines deal was found by Cheapflights users on 5/18. 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.
Tue 10/275:00 pm
SAT
-
DLH
1 stop7h 53m
United Airlines
Sat 10/315:00 am
DLH
-
SAT
1 stop7h 10m
United Airlines
Deal found 5/18$408
This United Airlines deal was found by Cheapflights users on 5/21. 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.
Tue 8/112:15 pm
SAT
-
DLH
2 stops8h 35m
United Airlines
Sat 8/153:12 pm
DLH
-
SAT
1 stop7h 39m
United Airlines
Deal found 5/21$439
This Delta deal was found by Cheapflights users on 5/19. 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.
Mon 7/276:05 pm
SAT
-
DLH
1 stop4h 44m
Delta
Sat 8/14:30 pm
DLH
-
SAT
1 stop4h 56m
Delta
Deal found 5/19$503
This Delta deal was found by Cheapflights users on 5/22. 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.
Sat 8/82:22 pm
SAT
-
DLH
1 stop5h 22m
Delta
Sat 8/155:15 am
DLH
-
SAT
1 stop6h 34m
Delta
Deal found 5/22$558

Find flight deals from San Antonio to Duluth

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Duluth (DLH). 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 May 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$343
(Delta)

Popular in

December

Cheapest in

January

Average price

$478
Provider with most accurate pricing for San Antonio-Duluth Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Antonio-Duluth Intl flights.
Search Deals
From San Antonio to Duluth Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Antonio to Duluth 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 May 23, 2026.
Use the filters below to find and compare flights from San Antonio to Duluth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioDuluth

SAT - DLH

SATDLH

San Antonio

Tue 7/14

6:05 pm-10:49 pm

1 stop4h 44m

Duluth Intl

Sun 7/19

11:50 am-5:11 pm

1 stop5h 21m

$393
Quickest round-trip

San AntonioDuluth

SAT - DLH

SATDLH

San Antonio

Mon 7/27

6:05 pm-10:49 pm

1 stop4h 44m

Duluth Intl

Sat 8/1

4:30 pm-9:26 pm

1 stop4h 56m

$612

San AntonioDuluth

SAT - DLH

SATDLH

San Antonio

Wed 8/5

7:20 pm-11:23 pm

2 stops28h 03m

Duluth Intl

Wed 8/12

3:12 pm-10:44 pm

2 stops7h 32m

$650

San AntonioDuluth

SAT - DLH

SATDLH

San Antonio

Mon 7/27

5:32 pm-11:23 pm

1 stop5h 51m

Duluth Intl

Sat 8/1

7:03 am-10:44 pm

2 stops15h 41m

$731

San AntonioDuluth

SAT - DLH

SATDLH

San Antonio

Sat 8/8

5:30 am-2:26 pm

2 stops8h 56m

Duluth Intl

Sat 8/15

7:45 am-7:58 pm

2 stops12h 13m

$813

San AntonioDuluth

SAT - DLH

SATDLH

San Antonio

Wed 6/3

5:30 pm-11:23 pm

1 stop5h 53m

Duluth Intl

Fri 6/5

11:18 am-3:39 pm

3 stops28h 21m

$817
Cheapest one-way
Quickest one-way

San AntonioDuluth

SAT - DLH

SATDLH

San Antonio

Thu 5/28

5:30 pm-11:11 pm

1 stop5h 41m

$493

San AntonioDuluth

SAT - DLH

SATDLH

San Antonio

Sat 5/30

1:40 pm-9:46 pm

1 stop8h 06m

$493

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/20

Sorted by cheapest first

Compare providers for flights from San Antonio to Duluth

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

Have a flexible travel schedule? Discover the best time to fly to Duluth from San Antonio 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 San Antonio to Duluth

How much does it cost to fly round-trip from San Antonio to Duluth?

Reviews of airlines servicing Duluth

Get insights into the airlines that provide service to Duluth. 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 Duluth. Reviews last updated May 23, 2026.
Read through reviews of airlines operating flights from San Antonio to Duluth, such as Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,444 reviews

Comfort

7.8

Food

7.2

Crew

8.5

Overall

7.9

Entertainment

7.8

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Aug 2023

BDL - MSP

The seats were wayyyy too small! If you are a larger person buying 2 seats would not work as arm rests do not go up
Delta
7.9
Good
8,444 reviews
Delta
7.9
Good
8,444 reviews

Comfort

7.8

Food

7.2

Crew

8.5

Overall

7.9

Entertainment

7.8

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Aug 2023

BDL - MSP

The seats were wayyyy too small! If you are a larger person buying 2 seats would not work as arm rests do not go up

Related info for your journey

Find useful and relevant information for your journey from San Antonio to Duluth. 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 San Antonio to Duluth?

    United Airlines and Delta can get you from San Antonio to Duluth in just under 4h 44m. Your travel time can differ by up to 3h 09m. San Antonio and Duluth are separated by a distance of 1242 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from San Antonio to Duluth round-trip?

    Delta, at $258, was found to be the cheapest airline from San Antonio to Duluth.. Delta is priced at 46% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from San Antonio to Duluth that include hotel bookings?

    Yes. In addition to deals on San Antonio to Duluth flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Antonio to Duluth?

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

  • Can I find deals for business class flights from San Antonio to Duluth?

    Yes. Cheapflights offers flight deals from San Antonio to Duluth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Duluth?

Book flights to Duluth if you plan to visit one of these locations
Two Harbors

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Top airline flying from San Antonio to Duluth

Discover the top airline that operate flights from San Antonio to Duluth. 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 May 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$258Average$469FlexibilityNo cancel feeOn-timeN/A

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