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Harlingen

$165+ Cheap flights from Detroit to Harlingen (DTT - HRL)

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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — HRL
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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Cheap flight deals from Detroit to Harlingen

Cheapest flights from Detroit to Harlingen
Explore the most affordable flight options available from Detroit to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2026.

This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:00 pm
DTW
-
HRL
1 stop6h 54m
American Airlines
Fri 8/213:17 pm
HRL
-
DTW
1 stop6h 41m
American Airlines
Deal found 7/21$329
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Thu 8/205:25 am
DTW
-
HRL
2 stops11h 34m
United Airlines
Thu 8/271:59 pm
HRL
-
DTW
1 stop7h 31m
United Airlines
Deal found 7/21$334
This American Airlines deal was found by Cheapflights users on 7/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:01 am
DTW
-
HRL
1 stop8h 04m
American Airlines
Thu 9/244:53 pm
HRL
-
DTW
1 stop5h 50m
American Airlines
Deal found 7/19$339
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:40 am
DTW
-
HRL
2 stops9h 02m
American Airlines
Sat 9/53:17 pm
HRL
-
DTW
1 stop6h 41m
American Airlines
Deal found 7/21$347
This United Airlines deal was found by Cheapflights users on 7/21. 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 9/15:25 am
DTW
-
HRL
2 stops8h 59m
United Airlines
Sat 9/51:59 pm
HRL
-
DTW
2 stops8h 55m
United Airlines
Deal found 7/21$359
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:43 am
DTW
-
HRL
1 stop7h 30m
American Airlines
Sun 9/65:54 am
HRL
-
DTW
2 stops10h 01m
American Airlines
Deal found 7/21$373

Find flight deals from Detroit to Harlingen

Discover tips and strategies to find the most affordable flight options for your journey from Detroit (DTT) to Harlingen (HRL). 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 July 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(American Airlines)

One-way from

$165
(United Airlines)

Popular in

December

Cheapest in

October

Average price

$392
Provider with most accurate pricing for Detroit (DTT)-Harlingen Valley Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Detroit (DTT)-Harlingen Valley Intl flights.
Search Deals
From Detroit (DTT) to Harlingen Valley Intl
Search Deals
One-way flight from Detroit (DTT) to Harlingen Valley Intl
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($78 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Detroit to Harlingen 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 July 23, 2026.
Use the filters below to find and compare flights from Detroit to Harlingen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Thu 8/20

5:25 am-3:59 pm

2 stops11h 34m

Harlingen Valley Intl

Thu 8/27

1:59 pm-10:30 pm

1 stop7h 31m

$334
Quickest round-trip

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Thu 9/24

5:55 am-11:20 am

2 stops6h 25m

Harlingen Valley Intl

Mon 9/28

5:30 am-12:40 pm

2 stops6h 10m

$339

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Wed 9/16

6:25 am-1:00 pm

2 stops7h 35m

Harlingen Valley Intl

Mon 9/21

6:20 am-3:10 pm

2 stops7h 50m

$339

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Sat 8/15

5:00 pm-10:54 pm

1 stop6h 54m

Harlingen Valley Intl

Fri 8/21

3:17 pm-10:58 pm

1 stop6h 41m

$368

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Wed 9/2

11:43 am-6:13 pm

1 stop7h 30m

Harlingen Valley Intl

Sun 9/6

5:54 am-4:55 pm

2 stops10h 01m

$373

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Thu 9/17

6:36 am-4:06 pm

2 stops10h 30m

Harlingen Valley Intl

Sun 9/20

4:53 pm-11:43 pm

1 stop5h 50m

$373

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Fri 9/18

5:55 am-11:20 am

2 stops6h 25m

Harlingen Valley Intl

Sun 9/20

6:00 am-4:45 pm

2 stops9h 45m

$395

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Thu 9/17

3:50 pm-10:35 pm

2 stops7h 45m

Harlingen Valley Intl

Sun 9/20

6:00 am-4:45 pm

2 stops9h 45m

$399

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Sat 8/22

6:15 am-1:24 pm

1 stop8h 09m

Harlingen Valley Intl

Mon 8/24

1:59 pm-10:30 pm

1 stop7h 31m

$419
Cheapest one-way

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Tue 9/8

6:15 am-1:24 pm

1 stop8h 09m

$165

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Compare providers for flights from Detroit to Harlingen

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

Have a flexible travel schedule? Discover the best time to fly to Harlingen from Detroit 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 Detroit to Harlingen

What is the cheapest month to book a flight from Detroit to Harlingen?

Currently, April is the cheapest month in which you can book a flight from Detroit to Harlingen (average of $290). Flying from Detroit to Harlingen in December is currently the most expensive (average of $617). 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 Harlingen

Get insights into the airlines that provide service to Harlingen. 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 Harlingen. Reviews last updated July 23, 2026.
Peruse reviews from past customers who have flown with American Airlines from Detroit to Harlingen to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,834 reviews

Boarding

7.5

Crew

7.9

Overall

7.1

Entertainment

6.8

Comfort

7.2

Food

6.4

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.
American Airlines
7.1
Good
11,834 reviews
American Airlines
7.1
Good
11,834 reviews

Boarding

7.5

Crew

7.9

Overall

7.1

Entertainment

6.8

Comfort

7.2

Food

6.4

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.

Related info for your journey

Find useful and relevant information for your journey from Detroit to Harlingen. 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 Detroit to Harlingen?

    United Airlines, Southwest, and American Airlines can get you from Detroit to Harlingen in just under 6h 25m. Your travel time can differ by up to 5h 09m. Airlines will cover a distance of 1369 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Detroit to Harlingen round-trip?

    Currently priced at $259, American Airlines will fly you from Detroit to Harlingen and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $261. American Airlines is 38% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Detroit to Harlingen that include hotel bookings?

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

  • How can I find direct flights from Detroit to Harlingen?

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

  • Can I find deals for business class flights from Detroit to Harlingen?

    Yes. Cheapflights offers flight deals from Detroit to Harlingen 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 Detroit to Harlingen?

    Currently, April is the cheapest month in which you can book a flight from Detroit to Harlingen (average of $290). Flying from Detroit to Harlingen in December is currently the most expensive (average of $617). 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 Detroit to Harlingen

Discover the top 2 airlines that operate flights from Detroit to Harlingen. 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 July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$259Average$445FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$261Average$335FlexibilityNo cancel feeOn-time69%

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