$141+ Cheap flights from Detroit to Harlingen (DTT - HRL)
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 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — HRL
Oct 22 — Oct 291
Round-trip
1 adult, Economy
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Find cheap flights from Detroit to Harlingen 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 Detroit to Harlingen
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Cheapest flights from Detroit to HarlingenExplore 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 September 22, 2026.
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 September 22, 2026.
This Southwest deal was found by Cheapflights users on 9/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/53:00 pm -
2 stops7h 10m
Tue 12/87:25 am -
2 stops7h 05m
Deal found 9/17![Southwest logo]()
$258
This Southwest deal was found by Cheapflights users on 9/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:10 am -
2 stops6h 55m
Wed 12/97:25 am -
2 stops7h 05m
Deal found 9/17![Southwest logo]()
$268
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 12/58:35 am -
1 stop8h 15m
Tue 12/84:39 pm -
1 stop5h 03m
Deal found 9/17![United Airlines logo]()
$291
This American Airlines deal was found by Cheapflights users on 9/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:42 am -
2 stops12h 29m
Wed 12/92:26 pm -
1 stop8h 26m
Deal found 9/17![American Airlines logo]()
$324
This American Airlines deal was found by Cheapflights users on 9/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/511:38 am -
1 stop7h 33m
Tue 12/82:26 pm -
1 stop8h 26m
Deal found 9/18![American Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 9/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:35 am -
1 stop5h 50m
Tue 12/812:00 pm -
2 stops10h 44m
Deal found 9/19![United Airlines logo]()
$344
This American Airlines deal was found by Cheapflights users on 9/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:00 am -
1 stop8h 56m
Sat 12/55:40 am -
1 stop7h 16m
Deal found 9/17![American Airlines logo]()
$347
This American Airlines deal was found by Cheapflights users on 9/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/181:34 pm -
2 stops10h 25m
Wed 12/22:26 pm -
1 stop8h 26m
Deal found 9/17![American Airlines logo]()
$354
Best flights from Detroit to HarlingenDiscover carefully curated flight deals from Detroit to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
Discover carefully curated flight deals from Detroit to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
This American Airlines deal was found by Cheapflights users on 9/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/51:32 pm -
2 stops10h 59m
Tue 12/810:44 am -
2 stops9h 58m
Deal found 9/18![American Airlines logo]()
$356
This United Airlines deal was found by Cheapflights users on 9/17. 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 12/28:35 am -
1 stop8h 15m
Sat 12/54:39 pm -
1 stop5h 14m
Deal found 9/17![United Airlines logo]()
$381
This American Airlines deal was found by Cheapflights users on 9/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:01 am -
1 stop6h 55m
Wed 12/22:26 pm -
1 stop8h 26m
Deal found 9/18![American Airlines logo]()
$377
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Fri 12/48:35 am -
1 stop5h 50m
Mon 12/74:39 pm -
1 stop5h 04m
Deal found 9/17![United Airlines logo]()
$411
This American Airlines deal was found by Cheapflights users on 9/19. 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.
Fri 12/118:00 am -
1 stop6h 56m
Sun 12/135:40 am -
2 stops9h 17m
Deal found 9/19![American Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 11/144:45 pm -
1 stop7h 03m
Wed 11/185:05 am -
2 stops9h 20m
Deal found 9/17![United Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/21. 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 11/104:45 pm -
1 stop7h 03m
Wed 11/111:59 pm -
1 stop7h 28m
Deal found 9/21![United Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Sun 12/68:35 am -
1 stop8h 15m
Fri 12/1112:00 pm -
2 stops9h 14m
Deal found 9/17![United Airlines logo]()
$455
Last-minute flights from Detroit to HarlingenDiscover last-minute flight deals from Detroit to Harlingen. Data last updated September 22, 2026 and is based on user searches.
Discover last-minute flight deals from Detroit to Harlingen. Data last updated September 22, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/21. 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 9/225:10 pm -
1 stop6h 38m
Fri 9/255:28 pm -
1 stop5h 15m
Deal found 9/21![American Airlines logo]()
$516
This United Airlines deal was found by Cheapflights users on 9/21. 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.
Fri 9/256:15 am -
1 stop8h 08m
Sun 9/277:15 am -
1 stop5h 40m
Deal found 9/21![United Airlines logo]()
$559
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Sat 10/36:15 am -
1 stop8h 08m
Wed 10/72:00 pm -
1 stop7h 30m
Deal found 9/18![United Airlines logo]()
$539
This American Airlines deal was found by Cheapflights users on 9/20. 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.
Mon 10/54:11 pm -
1 stop7h 39m
Sat 10/102:46 pm -
1 stop5h 41m
Deal found 9/20![American Airlines logo]()
$478
This Southwest deal was found by Cheapflights users on 9/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/54:55 pm -
2 stops7h 00m
Sat 10/1010:55 am -
2 stops7h 30m
Deal found 9/20![Southwest logo]()
$523
This United Airlines deal was found by Cheapflights users on 9/21. 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.
Sun 10/116:15 am -
1 stop8h 08m
Tue 10/132:00 pm -
1 stop7h 30m
Deal found 9/21![United Airlines logo]()
$477
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/206:15 am -
1 stop8h 08m
Tue 10/271:59 pm -
1 stop7h 28m
Deal found 9/21![United Airlines logo]()
$371
One-way flights from Detroit to HarlingenSearch for one-way flight options from Detroit to Harlingen. Find affordable one-way fares based on user searches. Data last updated September 22, 2026.
Search for one-way flight options from Detroit to Harlingen. Find affordable one-way fares based on user searches. Data last updated September 22, 2026.
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Fri 1/16:00 am -
1 stop8h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![United Airlines logo]()
$141
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Wed 10/146:15 am -
1 stop8h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![United Airlines logo]()
$170
This Southwest deal was found by Cheapflights users on 9/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/205:15 am -
2 stops10h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Southwest logo]()
$274
This American Airlines deal was found by Cheapflights users on 9/21. 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.
Sun 12/2011:41 am -
1 stop7h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![American Airlines logo]()
$397
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 September 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $234 (Southwest) |
One-way from | $141 (United Airlines) |
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 7,457,451 searches. Data last updated September 22, 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
Cheapest round-trip
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Fri 1/1
6:00 am-1:30 pm
1 stop8h 30m
Harlingen Valley Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$141
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Wed 10/14
6:15 am-1:23 pm
1 stop8h 08m
Harlingen Valley Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$170
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Sun 12/20
5:15 am-3:00 pm
2 stops10h 45m
Harlingen Valley Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$274
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Sat 12/5
1:32 pm-11:31 pm
2 stops10h 59m
Harlingen Valley Intl
Tue 12/8
10:44 am-9:42 pm
2 stops9h 58m
$356
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Wed 11/18
8:01 am-1:56 pm
1 stop6h 55m
Harlingen Valley Intl
Wed 12/2
2:26 pm-11:52 pm
1 stop8h 26m
$377
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Wed 12/2
8:35 am-3:50 pm
1 stop8h 15m
Harlingen Valley Intl
Sat 12/5
4:39 pm-10:53 pm
1 stop5h 14m
$381
Quickest round-trip
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Sun 12/20
11:41 am-5:51 pm
1 stop7h 10m
Harlingen Valley Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$397
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Fri 12/4
8:35 am-1:25 pm
1 stop5h 50m
Harlingen Valley Intl
Mon 12/7
4:39 pm-10:43 pm
1 stop5h 04m
$411
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Fri 12/11
8:00 am-1:56 pm
1 stop6h 56m
Harlingen Valley Intl
Sun 12/13
5:40 am-3:57 pm
2 stops9h 17m
$419
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Sat 11/14
4:45 pm-10:48 pm
1 stop7h 03m
Harlingen Valley Intl
Wed 11/18
5:05 am-3:25 pm
2 stops9h 20m
$429
Showing 1-10 of 12 resultsSorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
DTT-HRL
DTW-HRL
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
DTT-HRL
DTW-HRL
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 $288). Flying from Detroit to Harlingen in December is currently the most expensive (average of $593). 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 September 22, 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.
Overall
7.0
Comfort
7.2
Food
6.4
Boarding
7.4
Crew
7.9
Entertainment
6.8
Reviews
1 / 20
8.0
ExcellentMonica,Nov 2025
JAC - DFW
Overall
7.0
Comfort
7.2
Food
6.4
Boarding
7.4
Crew
7.9
Entertainment
6.8
Reviews
1 / 20
8.0
ExcellentMonica,Nov 2025
JAC - DFW
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.
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Complete your trip to Harlingen by adding a car rental and/or hotel reservation to your travel itinerary.
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Other flights to Harlingen
Explore flights to Harlingen departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 22, 2026.
Detroit and Harlingen flights
Browse other Detroit and Harlingen flight options. Last updated on September 22, 2026.
Other flights from Detroit
Browse through other flights departing from Detroit. Flights are based on user searches made on Cheapflights and were last updated on September 22, 2026.
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Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated September 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$261 | Average$374 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$264 | Average$445 | FlexibilityNo cancel fee | On-time71% |