$174+ Cheap flights from Colorado to Harlingen (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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — HRL
Jul 11 — Jul 181
Round-trip
1 adult, Economy
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Find cheap flights from Colorado 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 Colorado to Harlingen
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Best
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Cheapest flights from Colorado to HarlingenExplore the most affordable flight options available from Colorado to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 11, 2026.
Explore the most affordable flight options available from Colorado to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 11, 2026.
This Southwest deal was found by Cheapflights users on 6/9. 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 9/610:25 am
COS
- HRL
1 stop5h 15m
Southwest
Sun 9/206:00 am
HRL
- COS
1 stop9h 50m
Southwest
Deal found 6/9![Southwest logo]()
$233
This Southwest deal was found by Cheapflights users on 6/6. 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 7/47:25 am
DEN
- HRL
1 stop6h 00m
Southwest
Sat 7/115:10 pm
HRL
- DEN
1 stop4h 50m
Southwest
Deal found 6/6![Southwest logo]()
$241
This Southwest deal was found by Cheapflights users on 6/10. 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 7/245:00 am
DEN
- HRL
1 stop4h 00m
Southwest
Sat 7/255:10 pm
HRL
- DEN
1 stop7h 00m
Southwest
Deal found 6/10![Southwest logo]()
$282
This Southwest deal was found by Cheapflights users on 6/8. 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 7/47:25 am
DEN
- HRL
1 stop6h 00m
Southwest
Wed 7/810:50 am
HRL
- DEN
1 stop8h 45m
Southwest
Deal found 6/8![Southwest logo]()
$287
This Southwest deal was found by Cheapflights users on 6/7. 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 7/102:30 pm
DEN
- HRL
2 stops8h 15m
Southwest
Tue 7/147:05 am
HRL
- DEN
2 stops7h 25m
Southwest
Deal found 6/7![Southwest logo]()
$292
This American Airlines deal was found by Cheapflights users on 6/6. 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 8/153:51 pm
COS
- HRL
1 stop6h 03m
American Airlines
Tue 8/186:43 pm
HRL
- COS
1 stop5h 10m
American Airlines
Deal found 6/6![American Airlines logo]()
$325
This Southwest deal was found by Cheapflights users on 6/8. 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 7/35:00 am
DEN
- HRL
1 stop4h 00m
Southwest
Mon 7/66:30 pm
HRL
- DEN
1 stop6h 50m
Southwest
Deal found 6/8![Southwest logo]()
$353
This United Airlines deal was found by Cheapflights users on 6/9. 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 10/3111:55 am
COS
- HRL
1 stop6h 37m
United Airlines
Tue 11/35:10 am
HRL
- COS
1 stop6h 57m
United Airlines
Deal found 6/9![United Airlines logo]()
$355
This United Airlines deal was found by Cheapflights users on 6/8. 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 9/15:00 am
DEN
- HRL
1 stop7h 24m
United Airlines
Wed 9/25:18 pm
HRL
- DEN
1 stop5h 57m
United Airlines
Deal found 6/8![United Airlines logo]()
$362
This Southwest deal was found by Cheapflights users on 6/11. 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.
Thu 7/234:40 pm
COS
- HRL
2 stops6h 05m
Southwest
Mon 7/271:15 pm
HRL
- COS
2 stops8h 00m
Southwest
Deal found 6/11![Southwest logo]()
$388
Best flights from Colorado to HarlingenDiscover carefully curated flight deals from Colorado to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 11, 2026.
Discover carefully curated flight deals from Colorado to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 11, 2026.
This Southwest deal was found by Cheapflights users on 6/9. 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 9/610:25 am
COS
- HRL
1 stop5h 15m
Southwest
Sun 9/206:00 am
HRL
- COS
1 stop9h 50m
Southwest
Deal found 6/9![Southwest logo]()
$233
This American Airlines deal was found by Cheapflights users on 6/6. 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 8/153:51 pm
COS
- HRL
1 stop6h 03m
American Airlines
Tue 8/186:43 pm
HRL
- COS
1 stop5h 10m
American Airlines
Deal found 6/6![American Airlines logo]()
$325
This United Airlines deal was found by Cheapflights users on 6/8. 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 10/3111:55 am
COS
- HRL
1 stop6h 37m
United Airlines
Tue 11/35:10 am
HRL
- COS
1 stop6h 57m
United Airlines
Deal found 6/8![United Airlines logo]()
$356
This Southwest deal was found by Cheapflights users on 6/7. 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 7/105:00 am
DEN
- HRL
1 stop4h 00m
Southwest
Tue 7/142:10 pm
HRL
- DEN
1 stop5h 35m
Southwest
Deal found 6/7![Southwest logo]()
$241
This Southwest deal was found by Cheapflights users on 6/6. 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 7/47:25 am
DEN
- HRL
1 stop6h 00m
Southwest
Sat 7/115:10 pm
HRL
- DEN
1 stop4h 50m
Southwest
Deal found 6/6![Southwest logo]()
$241
This United Airlines deal was found by Cheapflights users on 6/8. 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 9/15:00 am
DEN
- HRL
1 stop7h 24m
United Airlines
Wed 9/25:18 pm
HRL
- DEN
1 stop5h 57m
United Airlines
Deal found 6/8![United Airlines logo]()
$362
This Southwest deal was found by Cheapflights users on 6/10. 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 7/255:25 am
DEN
- HRL
1 stop4h 20m
Southwest
Sun 7/265:40 am
HRL
- DEN
2 stops8h 30m
Southwest
Deal found 6/10![Southwest logo]()
$328
This Southwest deal was found by Cheapflights users on 6/8. 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 7/35:00 am
DEN
- HRL
1 stop4h 00m
Southwest
Mon 7/66:30 pm
HRL
- DEN
1 stop6h 50m
Southwest
Deal found 6/8![Southwest logo]()
$353
This Southwest deal was found by Cheapflights users on 6/11. 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.
Thu 7/234:40 pm
COS
- HRL
2 stops6h 05m
Southwest
Mon 7/271:15 pm
HRL
- COS
2 stops8h 00m
Southwest
Deal found 6/11![Southwest logo]()
$388
Last-minute flights from Colorado to HarlingenDiscover last-minute flight deals from Colorado to Harlingen. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from Colorado to Harlingen. Data last updated June 11, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 6/10. 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.
Thu 6/115:10 am
COS
- HRL
1 stop6h 15m
Southwest
Tue 6/162:10 pm
HRL
- COS
2 stops8h 35m
Southwest
Deal found 6/10![Southwest logo]()
$458
This American Airlines deal was found by Cheapflights users on 6/8. 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 6/163:53 pm
COS
- HRL
1 stop7h 21m
American Airlines
Wed 6/244:57 pm
HRL
- COS
1 stop6h 27m
American Airlines
Deal found 6/8![American Airlines logo]()
$498
This Southwest deal was found by Cheapflights users on 6/7. 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.
Tue 6/237:25 am
COS
- HRL
2 stops9h 35m
Southwest
Sat 6/275:05 am
HRL
- COS
1 stop5h 10m
Southwest
Deal found 6/7![Southwest logo]()
$442
This Southwest deal was found by Cheapflights users on 6/9. 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.
Wed 6/246:35 am
COS
- HRL
2 stops8h 40m
Southwest
Sun 6/284:35 pm
HRL
- COS
2 stops6h 25m
Southwest
Deal found 6/9![Southwest logo]()
$496
This Southwest deal was found by Cheapflights users on 6/8. 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 7/35:00 am
DEN
- HRL
1 stop4h 00m
Southwest
Mon 7/66:30 pm
HRL
- DEN
1 stop6h 50m
Southwest
Deal found 6/8![Southwest logo]()
$353
This Southwest deal was found by Cheapflights users on 6/6. 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 7/47:25 am
DEN
- HRL
1 stop6h 00m
Southwest
Sat 7/115:10 pm
HRL
- DEN
1 stop4h 50m
Southwest
Deal found 6/6![Southwest logo]()
$241
This Southwest deal was found by Cheapflights users on 6/8. 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 7/47:25 am
DEN
- HRL
1 stop6h 00m
Southwest
Wed 7/810:50 am
HRL
- DEN
1 stop8h 45m
Southwest
Deal found 6/8![Southwest logo]()
$287
This Southwest deal was found by Cheapflights users on 6/7. 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 7/102:30 pm
DEN
- HRL
2 stops8h 15m
Southwest
Tue 7/147:05 am
HRL
- DEN
2 stops7h 25m
Southwest
Deal found 6/7![Southwest logo]()
$292
This Southwest deal was found by Cheapflights users on 6/11. 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.
Thu 7/234:40 pm
COS
- HRL
2 stops6h 05m
Southwest
Mon 7/271:15 pm
HRL
- COS
2 stops8h 00m
Southwest
Deal found 6/11![Southwest logo]()
$388
This Southwest deal was found by Cheapflights users on 6/10. 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 7/245:00 am
DEN
- HRL
1 stop4h 00m
Southwest
Sat 7/255:10 pm
HRL
- DEN
1 stop7h 00m
Southwest
Deal found 6/10![Southwest logo]()
$282
This Southwest deal was found by Cheapflights users on 6/10. 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 7/255:25 am
DEN
- HRL
1 stop4h 20m
Southwest
Sun 7/266:40 pm
HRL
- DEN
1 stop6h 45m
Southwest
Deal found 6/10![Southwest logo]()
$375
One-way flights from Colorado to HarlingenSearch for one-way flight options from Colorado to Harlingen. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
Search for one-way flight options from Colorado to Harlingen. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
This Southwest deal was found by Cheapflights users on 6/6. 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.
Wed 7/15:45 am
DEN
- HRL
1 stop6h 45m
Southwest
Deal found 6/6![Southwest logo]()
$174
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/246:32 pm
COS
- HRL
2 stops24h 17m
United Airlines
Deal found 6/8![United Airlines logo]()
$354
Find flight deals from Colorado to Harlingen
Keep the following information in mind while searching for Colorado to Harlingen flight deals. Data was last updated June 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $233 (Southwest) |
One-way from | $174 (Southwest) |
Popular in | July |
Cheapest in | February |
Average price | $296 |
Good round-trip deal | $476 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Colorado 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 June 11, 2026.
Use the filters below to find and compare flights from Colorado to Harlingen that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Colorado SpringsHarlingen
COS - HRL
COSHRL
Colorado Springs
Sun 9/6
10:25 am-4:40 pm
1 stop5h 15m
Harlingen Valley Intl
Sun 9/20
6:00 am-2:50 pm
1 stop9h 50m
$233
Quickest round-trip
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Fri 7/10
5:00 am-10:00 am
1 stop4h 00m
Harlingen Valley Intl
Tue 7/14
2:10 pm-6:45 pm
1 stop5h 35m
$241
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Sat 7/4
7:25 am-2:25 pm
1 stop6h 00m
Harlingen Valley Intl
Sat 7/11
5:10 pm-9:00 pm
1 stop4h 50m
$241
Colorado SpringsHarlingen
COS - HRL
COSHRL
Colorado Springs
Sat 8/15
3:51 pm-10:54 pm
1 stop6h 03m
Harlingen Valley Intl
Tue 8/18
6:43 pm-10:53 pm
1 stop5h 10m
$325
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Sat 7/25
5:25 am-10:45 am
1 stop4h 20m
Harlingen Valley Intl
Sun 7/26
5:40 am-1:10 pm
2 stops8h 30m
$328
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Fri 7/3
5:00 am-10:00 am
1 stop4h 00m
Harlingen Valley Intl
Mon 7/6
6:30 pm-12:20 am
1 stop6h 50m
$353
Colorado SpringsHarlingen
COS - HRL
COSHRL
Colorado Springs
Sat 10/31
11:55 am-7:32 pm
1 stop6h 37m
Harlingen Valley Intl
Tue 11/3
5:10 am-11:07 am
1 stop6h 57m
$356
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Tue 9/1
5:00 am-1:24 pm
1 stop7h 24m
Harlingen Valley Intl
Wed 9/2
5:18 pm-10:15 pm
1 stop5h 57m
$362
Colorado SpringsHarlingen
COS - HRL
COSHRL
Colorado Springs
Thu 7/23
4:40 pm-11:45 pm
2 stops6h 05m
Harlingen Valley Intl
Mon 7/27
1:15 pm-8:15 pm
2 stops8h 00m
$388
Cheapest one-way
Quickest one-way
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Wed 7/1
5:45 am-1:30 pm
1 stop6h 45m
$174
Showing 1-10 of 11 resultsSorted by cheapest first
Best time to book a flight from Colorado to Harlingen
Have a flexible travel schedule? Discover the best time to fly to Harlingen from Colorado with our price prediction graph.
DEN-HRL
COS-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 Colorado to Harlingen
USCO-HRL
DEN-HRL
COS-HRL
What is the cheapest month to book a flight from Colorado to Harlingen?
Currently, November is the cheapest month in which you can book a flight from Colorado to Harlingen (average of $181). Flying from Colorado to Harlingen in July is currently the most expensive (average of $268). 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.
How much does it cost to fly round-trip from Colorado to Harlingen?
Related info for your journey
Find useful and relevant information for your journey from Colorado 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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Top destinations
Alternative routes for Colorado to Harlingen
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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 Colorado to Harlingen by cabin class
Find flights from Colorado 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 June 11, 2026.
Colorado and Harlingen flights
Browse other Colorado and Harlingen flight options. Last updated on June 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Colorado to Harlingen flights
Consider these flights traveling from Colorado to Harlingen.
Top 3 airlines flying from Colorado to Harlingen
Discover the top 3 airlines that operate flights from Colorado 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 June 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$199 | Average$309 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$252 | Average$360 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$266 | Average$476 | FlexibilityNo cancel fee | On-time69% |