$120 Cheap Delta flights Philadelphia (PHL) to Houston (IAH)

You can find affordable round-trip Delta Air Lines flights from $206 from PHL to IAH by organizing your results from “Price (lowest to highest)” on Expedia. Or look for deals from $120 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.

November is one of the most affordable months to travel to Houston with Delta Air Lines. You could also find fantastic deals on return and one-way fares in February.

To find cheap Delta Air Lines fares from Philadelphia Intl. Airport (PHL) to George Bush Intercontinental Airport (IAH), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect what you pay. Sunday is generally the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your flight on a Sunday.**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.

Fill in your dates, press search and select the “Nonstop” filter on Expedia to browse any direct flights from PHL to IAH with Delta Air Lines or other airlines.

To find the earliest departure from PHL to IAH with Delta Air Lines, sort your results by “Early Morning” and “Morning.” Booking an early flight usually means cancellations are less likely.**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.

Delta Air Lines flights from Philadelphia Intl. Airport (PHL) to Houston come in to George Bush Intercontinental Airport (IAH). This is the main gateway to this city.

Delta Air Lines makes flying from PHL to IAH more comfortable with a rewarding loyalty program and an excellent in-flight experience. You could even start collecting points with Delta SkyMiles. Remember to join our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are generally free within 24 hours of booking, but your airline may charge you after that. For more information about altering your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the freedom to make changes without being charged, tick the “No cancel fee” or “Changes included” filter when planning your next escape.