$170+ 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — HRL
Sep 20 — Sep 271
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
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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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Best
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One-way
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 August 21, 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 August 21, 2026.
This Delta deal was found by Cheapflights users on 8/18. 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.
Wed 11/187:00 am -
1 stop7h 32m
Wed 12/22:30 pm -
1 stop7h 25m
Deal found 8/18![Delta logo]()
$339
This American Airlines deal was found by Cheapflights users on 8/18. 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.
Thu 11/198:00 am -
1 stop7h 20m
Tue 11/245:40 am -
1 stop7h 18m
Deal found 8/18![American Airlines logo]()
$345
This American Airlines deal was found by Cheapflights users on 8/17. 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 9/3012:56 pm -
2 stops10h 52m
Tue 10/62:46 pm -
1 stop7h 52m
Deal found 8/17![American Airlines logo]()
$348
This United Airlines deal was found by Cheapflights users on 8/21. 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 10/205:30 am -
2 stops8h 53m
Tue 10/275:05 am -
2 stops9h 20m
Deal found 8/21![United Airlines logo]()
$349
This American Airlines deal was found by Cheapflights users on 8/17. 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 9/128:21 am -
2 stops9h 37m
Mon 9/215:28 pm -
1 stop5h 15m
Deal found 8/17![American Airlines logo]()
$355
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Wed 11/188:00 am -
1 stop7h 17m
Wed 12/210:44 am -
1 stop6h 50m
Deal found 8/19![American Airlines logo]()
$363
This American Airlines deal was found by Cheapflights users on 8/21. 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 9/158:01 am -
1 stop8h 04m
Thu 9/244:53 pm -
1 stop5h 50m
Deal found 8/21![American Airlines logo]()
$371
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 August 21, 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 August 21, 2026.
This United Airlines deal was found by Cheapflights users on 8/21. 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 8/21![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 8/21. 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.
Wed 11/187:00 am -
1 stop7h 32m
Wed 12/22:30 pm -
2 stops9h 27m
Deal found 8/21![Delta logo]()
$344
This American Airlines deal was found by Cheapflights users on 8/21. 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.
Mon 11/238:00 am -
1 stop7h 20m
Tue 11/245:40 am -
1 stop7h 18m
Deal found 8/21![American Airlines logo]()
$348
This Southwest deal was found by Cheapflights users on 8/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:35 am -
2 stops6h 40m
Mon 10/265:30 am -
2 stops6h 20m
Deal found 8/19![Southwest logo]()
$349
This United Airlines deal was found by Cheapflights users on 8/17. 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 1/178:15 am -
1 stop8h 19m
Sun 1/249:20 am -
1 stop5h 23m
Deal found 8/17![United Airlines logo]()
$360
This American Airlines deal was found by Cheapflights users on 8/18. 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.
Thu 11/198:00 am -
1 stop7h 20m
Tue 11/2410:43 am -
2 stops9h 54m
Deal found 8/18![American Airlines logo]()
$385
This Southwest deal was found by Cheapflights users on 8/17. 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.
Fri 1/228:35 am -
2 stops9h 30m
Fri 1/2912:00 pm -
2 stops6h 50m
Deal found 8/17![Southwest logo]()
$389
Last-minute flights from Detroit to HarlingenDiscover last-minute flight deals from Detroit to Harlingen. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from Detroit to Harlingen. Data last updated August 21, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Tue 9/15:41 am -
1 stop5h 23m
Sat 9/53:17 pm -
1 stop6h 41m
Deal found 8/17![American Airlines logo]()
$374
This American Airlines deal was found by Cheapflights users on 8/17. 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 9/128:21 am -
2 stops9h 37m
Mon 9/215:28 pm -
1 stop5h 15m
Deal found 8/17![American Airlines logo]()
$355
This American Airlines deal was found by Cheapflights users on 8/21. 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 9/158:01 am -
1 stop8h 04m
Thu 9/244:53 pm -
1 stop5h 50m
Deal found 8/21![American Airlines logo]()
$371
This American Airlines deal was found by Cheapflights users on 8/17. 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 9/308:01 am -
1 stop8h 04m
Tue 10/62:46 pm -
1 stop7h 52m
Deal found 8/17![American Airlines logo]()
$339
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 August 21, 2026.
Search for one-way flight options from Detroit to Harlingen. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Sat 10/38:01 am -
1 stop8h 04m
Deal found 8/19![American Airlines logo]()
$170
This Southwest deal was found by Cheapflights users on 8/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:25 pm -
2 stops8h 00m
Deal found 8/19![Southwest logo]()
$175
This American Airlines deal was found by Cheapflights users on 8/19. 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 9/85:41 am -
1 stop5h 23m
Deal found 8/19![American Airlines logo]()
$205
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Tue 9/812:35 pm -
2 stops8h 04m
Deal found 8/19![United Airlines logo]()
$255
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Mon 9/75:41 am -
1 stop5h 23m
Deal found 8/17![American Airlines logo]()
$266
This deal was found by Cheapflights users on 8/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/14:40 pm -
1 stop6h 19m
Deal found 8/17![United Airlines logo]()
$403
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 August 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $339 (Delta) |
One-way from | $170 (American 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 August 21, 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
Tue 10/20
6:15 am-1:23 pm
1 stop8h 08m
Harlingen Valley Intl
Tue 10/27
1:59 pm-10:27 pm
1 stop7h 28m
$339
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Wed 11/18
7:00 am-1:32 pm
1 stop7h 32m
Harlingen Valley Intl
Wed 12/2
2:30 pm-12:57 am
2 stops9h 27m
$344
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Mon 11/23
8:00 am-2:20 pm
1 stop7h 20m
Harlingen Valley Intl
Tue 11/24
5:40 am-1:58 pm
1 stop7h 18m
$348
Quickest round-trip
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Fri 10/23
6:35 am-12:15 pm
2 stops6h 40m
Harlingen Valley Intl
Mon 10/26
5:30 am-12:50 pm
2 stops6h 20m
$349
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Sun 1/17
8:15 am-3:34 pm
1 stop8h 19m
Harlingen Valley Intl
Sun 1/24
9:20 am-3:43 pm
1 stop5h 23m
$360
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Thu 11/19
8:00 am-2:20 pm
1 stop7h 20m
Harlingen Valley Intl
Tue 11/24
10:43 am-9:37 pm
2 stops9h 54m
$385
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Fri 1/22
8:35 am-5:05 pm
2 stops9h 30m
Harlingen Valley Intl
Fri 1/29
12:00 pm-7:50 pm
2 stops6h 50m
$389
Cheapest one-way
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Sat 10/3
12:25 pm-7:25 pm
2 stops8h 00m
$175
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Tue 9/8
12:35 pm-7:39 pm
2 stops8h 04m
$255
Quickest one-way
DetroitHarlingen
DTW Detroit Metropolitan Wayne County - HRL Harlingen Valley Intl
DTWHRL
Detroit Metropolitan Wayne County
Mon 9/7
5:41 am-10:04 am
1 stop5h 23m
$266
Showing 1-10 of 11 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 August.
| 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 August 21, 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.
Entertainment
6.8
Boarding
7.5
Food
6.4
Crew
7.9
Comfort
7.2
Overall
7.1
Reviews
1 / 20
8.0
ExcellentMonica,Nov 2025
JAC - DFW
Entertainment
6.8
Boarding
7.5
Food
6.4
Crew
7.9
Comfort
7.2
Overall
7.1
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
Complete your trip to Harlingen by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Detroit to Harlingen by cabin class
Find flights from Detroit to Harlingen, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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 August 21, 2026.
Detroit and Harlingen flights
Browse other Detroit and Harlingen flight options. Last updated on August 21, 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 August 21, 2026.
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Detroit to Harlingen flights
Consider these flights traveling from Detroit to Harlingen.
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 August 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$259 | Average$375 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$261 | Average$335 | FlexibilityNo cancel fee | On-time69% |