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Sat, Apr 4 - Wed, Apr 8
IAH
George Bush Intercontinental
PHL
Philadelphia Intl.
$209 Roundtrip, found 2 days ago
$209
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sat, Apr 4 from George Bush Intercontinental to Philadelphia Intl., returning Wed, Apr 8, priced at $209 found 2 days ago
Sat, Apr 4 - Wed, Apr 8
IAH
George Bush Intercontinental
PHL
Philadelphia Intl.
$209 Roundtrip, found 2 days ago
$209
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sat, Apr 4 from George Bush Intercontinental to Philadelphia Intl., returning Wed, Apr 8, priced at $209 found 2 days ago
Sat, Apr 4 - Wed, Apr 8
IAH
George Bush Intercontinental
TTN
Mercer
$232 Roundtrip, found 2 days ago
$232
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sat, Apr 4 from George Bush Intercontinental to Mercer, returning Wed, Apr 8, priced at $232 found 2 days ago
Sat, Apr 4 - Wed, Apr 8
IAH
George Bush Intercontinental
TTN
Mercer
$232 Roundtrip, found 2 days ago
$232
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sat, Apr 4 from George Bush Intercontinental to Mercer, returning Wed, Apr 8, priced at $232 found 2 days ago
Wed, Apr 22 - Tue, Apr 28
IAH
Houston
PHL
Philadelphia
$137 Roundtrip, found 21 hours ago
$137
Roundtrip
found 21 hours ago
Select Spirit Airlines flight, departing Wed, Apr 22 from Houston to Philadelphia, returning Tue, Apr 28, priced at $137 found 21 hours ago
Wed, Apr 22 - Tue, Apr 28
IAH
Houston
TTN
Trenton
$160 Roundtrip, found 21 hours ago
$160
Roundtrip
found 21 hours ago
Select Frontier Airlines flight, departing Wed, Apr 22 from Houston to Trenton, returning Tue, Apr 28, priced at $160 found 21 hours ago
Thu, Apr 30 - Sat, May 2
IAH
Houston
PHL
Philadelphia
$160 Roundtrip, found 5 hours ago
$160
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Thu, Apr 30 from Houston to Philadelphia, returning Sat, May 2, priced at $160 found 5 hours ago
Sat, May 9 - Sat, May 16
IAH
Houston
PHL
Philadelphia
$173 Roundtrip, found 3 hours ago
$173
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sat, May 9 from Houston to Philadelphia, returning Sat, May 16, priced at $173 found 3 hours ago
Thu, May 7 - Sat, May 9
IAH
Houston
PHL
Philadelphia
$229 Roundtrip, found 1 day ago
$229
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Thu, May 7 from Houston to Philadelphia, returning Sat, May 9, priced at $229 found 1 day ago
Price found within the past 48 hours. Click for updated prices.
Orchard Way
2.0-star property

Orchard Way

No reviews

May 7 - May 11

4 night stay

Houston (HOU) to Philadelphia (PHL)

Frontier Airlines • Non-stop roundtrip • Coach
Price was $3,398, price is now $1,812 per person
$1,812
per person
found 2 hours ago
Tudor Place
4.0-star property

Tudor Place

No reviews

May 7 - May 11

4 night stay

Houston (HOU) to Philadelphia (PHL)

Frontier Airlines • Non-stop roundtrip • Coach
Price was $4,487, price is now $2,271 per person
$2,271
per person
found 2 hours ago
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Frequently asked questions

Are there non-stop flights from Houston to Allentown?
You're in luck — there are 3 airlines which offer direct services between George Bush Intercontinental Airport (IAH) and Philadelphia, PA (PHL-Philadelphia Intl.). These are some of the most popular:

  • United Airlines
  • American Airlines
  • Frontier Airlines

What is the shortest flight from Houston to Allentown?
The fastest flight time from Houston to Allentown is 3 hours and 45 minutes, which gives you ample time to enjoy a wine or get engrossed in a book.
What airlines fly from Houston to Allentown most frequently?
Check out United Airlines (UA). This airline offers some of the most frequent flights from IAH to Philadelphia Intl. Airport (PHL). It operates 117 services on this route every month and is a favorite among travelers. American Airlines (AA) also flies from Houston to Allentown. It's another excellent choice and has 86 flights monthly.
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.