$141 Cheap Delta flights Duluth (DLH) to Harlingen (HRL)

Finding cheap one-way Delta Air Lines flights from DLH to HRL from $141 on Expedia is a cinch — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares from $239 for your next exciting getaway.**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.

Search for one-way or round-trip flights to Harlingen in January or September. You could find cheaper fares with Delta Air Lines during these off-peak times.

Look for cheap Delta Air Lines flights from Duluth Intl. Airport (DLH) to Valley Intl. Airport (HRL) one to three months before your day of 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. No matter the fare class and itinerary, the best day 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.

Select our “Nonstop” filter when looking for direct Delta Air Lines flights from DLH to HRL. It’s also an easy way to compare other airlines servicing the same nonstop journey.

Sort your results by “Early Morning” and “Morning” to find the earliest departures from DLH to HRL. 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.

Hop on a Delta Air Lines flight from Duluth Intl. Airport (DLH) to Harlingen, and you’re most likely to touch down at Valley Intl. Airport (HRL). This is the airline’s primary hub in this destination.

Delta Air Lines makes flying from DLH to HRL enjoyable with a rewarding loyalty program and an excellent in-flight experience. You even have the chance to collect points with Delta SkyMiles. Remember to join Expedia’s free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are often free within 24 hours of making a booking, but your airline may add a charge after that time. For more details about altering your reservation, go to your “Trips,” select your flight and click on “Manage Booking.” If you want the freedom to change your itinerary without additional costs, tick the “Changes included” and “No cancel fee” filters when organizing your trip.