Cheap Flights to Costilla County from $79

View $79 flight on Sat, Feb 14, 2026Opens in a new window

Popular airlines to Costilla County

  • Denver Air Connection

    Denver Air Connection

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

How much is the cheapest flight to Costilla County?

Prices were available within the past 7 days and start at $79 for one-way flights and $178 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KEY LIME AIR DBA DENVER AIR CONNECTION
Fri, Feb 27 - Sun, Mar 1
DEN
Denver
ALS
Alamosa
$178 Roundtrip, found 5 days ago
$178
Roundtrip
found 5 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Fri, Feb 27 from Denver to Alamosa, returning Sun, Mar 1, priced at $178 found 5 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Sat, Jan 3 - Sun, Jan 4
DEN
Denver
ALS
Alamosa
$198 Roundtrip, found 3 hours ago
$198
Roundtrip
found 3 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sat, Jan 3 from Denver to Alamosa, returning Sun, Jan 4, priced at $198 found 3 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Tue, Dec 30 - Fri, Jan 2
DEN
Denver
ALS
Alamosa
$213 Roundtrip, found 3 days ago
$213
Roundtrip
found 3 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Tue, Dec 30 from Denver to Alamosa, returning Fri, Jan 2, priced at $213 found 3 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Fri, Dec 26 - Sat, Jan 3
DEN
Denver
ALS
Alamosa
$218 Roundtrip, found 2 hours ago
$218
Roundtrip
found 2 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Fri, Dec 26 from Denver to Alamosa, returning Sat, Jan 3, priced at $218 found 2 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Wed, Dec 31 - Fri, Jan 2
DEN
Denver
ALS
Alamosa
$223 Roundtrip, found 2 days ago
$223
Roundtrip
found 2 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Wed, Dec 31 from Denver to Alamosa, returning Fri, Jan 2, priced at $223 found 2 days ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Tue, Dec 30 - Wed, Dec 31
DEN
Denver
ALS
Alamosa
$228 Roundtrip, found 2 hours ago
$228
Roundtrip
found 2 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Tue, Dec 30 from Denver to Alamosa, returning Wed, Dec 31, priced at $228 found 2 hours ago
United
Sun, Jan 4 - Sat, Jan 17
SLC
Salt Lake City
ALS
Alamosa
$388 Roundtrip, found 5 days ago
$388
Roundtrip
found 5 days ago
Select United flight, departing Sun, Jan 4 from Salt Lake City to Alamosa, returning Sat, Jan 17, priced at $388 found 5 days ago
United
Wed, Jan 7 - Sat, Jan 10
DFW
Dallas
ALS
Alamosa
$393 Roundtrip, found 3 days ago
$393
Roundtrip
found 3 days ago
Select United flight, departing Wed, Jan 7 from Dallas to Alamosa, returning Sat, Jan 10, priced at $393 found 3 days ago
American Airlines
Wed, Feb 18 - Thu, Feb 19
OKC
Oklahoma City
ALS
Alamosa
$411 Roundtrip, found 2 days ago
$411
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Feb 18 from Oklahoma City to Alamosa, returning Thu, Feb 19, priced at $411 found 2 days ago
Delta
Tue, Feb 3 - Mon, Feb 9
DAL
Dallas
ALS
Alamosa
$429 Roundtrip, found 1 day ago
$429
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Feb 3 from Dallas to Alamosa, returning Mon, Feb 9, priced at $429 found 1 day ago

Enjoy extra legroom, flight flexibility, and a seamless travel experience.

Costilla County Flights Information

Airlines serving
KEY LIME AIR DBA DENVER AIR CONNECTION, United, Delta, American Airlines
Roundtrip price
from $178

Frequently asked questions

How do I find cheap flights to Costilla County that have flexible change policies?
At Expedia, we've been channeling our inner acrobat to provide you with the most flexible airfares around town. Just click on "No change fee" under the "Flexible change policies" subheading to find your ideal flight to Costilla County.
Which airlines fly to Costilla County?
With a good selection of airlines offering flights into or near Costilla County, you have plenty of options:

  • United Airlines - 390 flights to or near Costilla County each month, including 390 flights to Colorado Springs Airport (COS) per month.
  • Southwest Airlines - 264 flights to or near Costilla County each month, including 264 flights to Colorado Springs Airport (COS) per month.
  • American Airlines - 151 flights to or near Costilla County each month, including 151 flights to Colorado Springs Airport (COS) per month.

How can I find cheap tickets to Costilla County?
An useful strategy for getting your hands on cheap tickets is to be flexible with your dates. Begin with searching for your flight to Costilla County, then click on the "flexible dates" box to compare prices for nearby days. Another useful tip? Book well in advance. For an idea of costs, $178 was the lowest price for a flight to Costilla County in the last seven days.
How much is a flight to Costilla County?
In the last seven days, round-trip tickets to Costilla County sold for as little as $178 and reached a maximum of $429. For one-way journeys departing from Denver (DEN), the lowest amount paid during this time was $79.
What are the most popular airports to fly into in Costilla County?
The main gateway to Costilla County, roughly 889 flights land at Colorado Springs Airport (COS) every month. Look for a rewarding deal, lock in your fare and prepare to experience this sensational region.
When is the cheapest time to fly to Costilla County?
Consider traveling earlier in the week to bag the best airfare to Costilla County. Tuesday is usually the cheapest day to take off, with Monday a close second. Saturday typically has the most expensive prices. This is because a lot of people prefer to begin their getaway on a weekend.
How much is a plane ticket to Costilla County?
Plane fares varied from $178 to $429 over the last seven days. When you're ready to book, we're here to help grab the best price to Costilla County.
What months are the cheapest to book a flight to Costilla County?
To secure a fabulous deal to Costilla County, book during February when the price of airfares are at their lowest. The most expensive time to book? In the United States, it's the month of December.
How long is a flight to Costilla County?
Whether or not you'll have time for a movie marathon depends on where you're traveling from. To give you a rough idea, here are the average flight times for three well-known domestic routes to Costilla County:

  • Denver, CO (DEN-Denver Intl.) to Colorado Springs Airport (COS) - 49 minutes
  • Dallas, TX (DFW-Dallas-Fort Worth Intl.) to Colorado Springs Airport (COS) - 2 hours
  • Houston, TX (IAH-George Bush Intercontinental) to Colorado Springs Airport (COS) - 2 hours and 33 minutes

What is the best time to go to Costilla County?
If you'd love to experience Costilla County's most populous city when it's buzzing with activity, set off for San Luis sometime during May, June and July. Like most locations in the Northern Hemisphere, summer here begins June 20, with average temperatures of between 50ºF and 75ºF.

Trending flights to Costilla County

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KEY LIME AIR DBA DENVER AIR CONNECTION
Fri, Feb 27 - Sun, Mar 1
DEN
Denver
ALS
Alamosa
$178 Roundtrip, found 5 days ago
$178
Roundtrip
found 5 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Fri, Feb 27 from Denver to Alamosa, returning Sun, Mar 1, priced at $178 found 5 days ago
*Available to One Key members.