$226 Cheap Delta flights Helena (HLN) to Philadelphia (PHL)

View $226 flight on Wed, Sep 3, 2025Opens in a new window

$226 Cheap Delta flights Helena (HLN) to Philadelphia (PHL)

Prices were available within the past 7 days and start at $226 for one-way flights and $459 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Aug 30 - Tue, Sep 2
HLN
Helena
PHL
Philadelphia
$459 Roundtrip, found 5 days ago
$459
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Aug 30 from Helena to Philadelphia, returning Tue, Sep 2, priced at $459 found 5 days ago
Delta
Sat, Aug 30 - Tue, Sep 2
HLN
Helena
PHL
Philadelphia
$464 Roundtrip, found 5 days ago
$464
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Aug 30 from Helena to Philadelphia, returning Tue, Sep 2, priced at $464 found 5 days ago
Delta
Wed, Aug 20 - Sat, Aug 30
HLN
Helena
PHL
Philadelphia
$495 Roundtrip, found 2 days ago
$495
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Aug 20 from Helena to Philadelphia, returning Sat, Aug 30, priced at $495 found 2 days ago
Delta
Sat, Aug 30 - Tue, Sep 2
HLN
Helena
PHL
Philadelphia
$510 Roundtrip, found 5 days ago
$510
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Aug 30 from Helena to Philadelphia, returning Tue, Sep 2, priced at $510 found 5 days ago
Delta
Wed, Aug 20 - Mon, Aug 25
HLN
Helena
PHL
Philadelphia
$515 Roundtrip, found 2 days ago
$515
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Aug 20 from Helena to Philadelphia, returning Mon, Aug 25, priced at $515 found 2 days ago
Delta
Sat, Aug 23 - Sat, Aug 30
HLN
Helena
PHL
Philadelphia
$567 Roundtrip, found 2 days ago
$567
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Aug 23 from Helena to Philadelphia, returning Sat, Aug 30, priced at $567 found 2 days ago
Flights from Helena (HLN) to Philadelphia (PHL)
Origin airport
Helena Regional
Destination airport
Philadelphia Intl.
Airlines serving
Alaska Airlines, Delta, United
Popular airline
Alaska Airlines
Distance
1888 mi

Frequently asked questions

How much is a Delta Air Lines flight from Helena Regional Airport (HLN) to Philadelphia Intl. Airport (PHL)?
Grab affordable round-trip Delta Air Lines flights from $459 from HLN to PHL by filtering your results from "Price (lowest to highest)" on Expedia. Or look for options from $226 for a one-way journey.**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 HLN to PHL with Delta Air Lines?
Delta Air Lines flights to Philadelphia are typically cheaper in the low-season months of January and February. Whether you need a one-way or a return ticket, you could land a better deal then.
What is the cheapest time to book flights from Helena Regional Airport (HLN) to Philadelphia Intl. Airport (PHL) with Delta Air Lines?
Begin your search one to three months ahead of your travel date to get cheaper fares on Delta Air Lines flights from Helena Regional Airport (HLN) to Philadelphia Intl. Airport (PHL). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get the timing right, and you can enjoy significant savings on domestic journeys.*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 Helena Regional Airport (HLN) to Philadelphia Intl. Airport (PHL)?
Use the "Nonstop" filter when searching for direct Delta Air Lines flights from HLN to PHL. You can also compare other carriers offering the same nonstop journey.
What is the earliest Delta Air Lines flight from HLN to PHL?
Filter your results by "Morning" and "Early Morning" to find the earliest departures from HLN to PHL. 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 Philadelphia?
Take a Delta Air Lines flight from Helena Regional Airport (HLN) to Philadelphia, and you'll probably arrive at Philadelphia Intl. Airport (PHL). This is the airline's main hub in this destination.
Why fly with Delta Air Lines from HLN to PHL?
Flying from HLN to PHL with Delta Air Lines means enjoying a host of perks, such as a rewarding loyalty program and an excellent in-flight experience. Plus, when booking through Expedia, One Key™ members can collect OneKeyCash™* to use on select future travel purchases. That's in addition to the Delta SkyMiles points you can earn with Delta Air Lines.*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 Helena Regional Airport (HLN) to Philadelphia Intl. Airport (PHL)?
Changes are generally free within 24 hours of making your booking, but your airline may charge you after that. For more information about modifying your flights, check out your "Trips," select your flight and click on "Manage Booking." If you want the freedom to change your itinerary without additional charges, tick the "Changes included" and "No cancel fee" filters when planning your next getaway.

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*Available to One Key members.