$178 Cheap Delta flights Houston (IAH) to Helena (HLN)

View $178 flight on Sat, Oct 11, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

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

$178 Cheap Delta flights Houston (IAH) to Helena (HLN)

Prices were available within the past 7 days and start at $178 for one-way flights and $355 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Oct 18 - Tue, Oct 21
IAH
Houston
HLN
Helena
$355 Roundtrip, found 15 hours ago
$355
Roundtrip
found 15 hours ago
Select Delta flight, departing Sat, Oct 18 from Houston to Helena, returning Tue, Oct 21, priced at $355 found 15 hours ago
Delta
Tue, Sep 30 - Wed, Oct 8
IAH
Houston
HLN
Helena
$360 Roundtrip, found 21 hours ago
$360
Roundtrip
found 21 hours ago
Select Delta flight, departing Tue, Sep 30 from Houston to Helena, returning Wed, Oct 8, priced at $360 found 21 hours ago
Delta
Mon, Sep 29 - Wed, Oct 8
IAH
Houston
HLN
Helena
$432 Roundtrip, found 21 hours ago
$432
Roundtrip
found 21 hours ago
Select Delta flight, departing Mon, Sep 29 from Houston to Helena, returning Wed, Oct 8, priced at $432 found 21 hours ago
Delta
Tue, Nov 18 - Tue, Nov 25
IAH
Houston
HLN
Helena
$436 Roundtrip, found 1 day ago
$436
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Nov 18 from Houston to Helena, returning Tue, Nov 25, priced at $436 found 1 day ago
Flights from Houston (IAH) to Helena (HLN)
Origin airport
George Bush Intercontinental
Destination airport
Helena Regional
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Popular airline
Delta
Distance
1454 mi

Frequently asked questions

How much is a Delta Air Lines flight from George Bush Intercontinental Airport (IAH) to Helena Regional Airport (HLN)?
Apply the "Price (lowest to highest)" filter on Expedia to search for cheap Delta Air Lines return flights from $355 from IAH to HLN. Affordable one-way fares from $178 are available too.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from IAH to HLN with Delta Air Lines?
December is one of the cheapest months to travel to Helena with Delta Air Lines. You could also find fantastic deals on one-way and round-trip tickets in January.
What is the cheapest time to book flights from George Bush Intercontinental Airport (IAH) to Helena Regional Airport (HLN) with Delta Air Lines?
Look for affordable Delta Air Lines flights from George Bush Intercontinental Airport (IAH) to Helena Regional Airport (HLN) one to three months prior to your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and journey, the best day of the week to book a domestic flight is generally Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from George Bush Intercontinental Airport (IAH) to Helena Regional Airport (HLN)?
To figure out if there's a direct route from IAH to HLN with Delta Air Lines or other airlines, check the "Nonstop" box when browsing for flights.
What is the earliest Delta Air Lines flight from IAH to HLN?
Sort your results by "Morning" and "Early Morning" to browse the earliest flights from IAH to HLN. Jetting off early means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in Helena?
Delta Air Lines flights from George Bush Intercontinental Airport (IAH) to Helena come in to land at Helena Regional Airport (HLN). This is the main entry point to this destination.
Why fly with Delta Air Lines from IAH to HLN?
With an excellent in-flight experience and a rewarding loyalty program, Delta Air Lines is a favorite for many passengers heading from IAH to HLN. What's more, if you're a Delta SkyMiles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be spent on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from George Bush Intercontinental Airport (IAH) to Helena Regional Airport (HLN)?
Depending on the type of ticket you purchased, a fee generally applies if you change or cancel your flight more than 24 hours after it's confirmed. To secure tickets with more flexibility, select our "Changes included" or "No cancel fee" filter while searching for flights. For more details on canceling or modifying your reservation, head to "Trips," select your flight and click on "Manage Booking."

Explore a world of travel with Expedia

*Available to One Key members.