American Airlines on Monday joined its competitors in adding nonstop air service from Philadelphia to Minneapolis-Saint Paul International Airport to accommodate an upsurge in demand for Eagles fans heading to Sunday's Super Bowl.

American, the dominant carrier in Philadelphia and the official airline for the Eagles, announced Monday that it would add a morning flight on Thursday and an afternoon departure on Friday to Minneapolis, supplementing its two daily nonstop departures. Departing passengers will receive an Eagles rally towel.

An Eagles rally towel
American Airlines
An Eagles rally towel

Delta, United, and Southwest Airlines last week announced they were beefing up nonstop service from Boston, Philadelphia, and other major hubs to Super Bowl LII traffic, according to the Minneapolis Star-Tribune.

Delta, the dominant airline in Minneapolis, is adding 21 flights between MSP and Boston and Philadelphia. United is 16 additional flights, including added service from hubs in Houston, Los Angeles, New York, and Washington, D.C. Southwest is adding a flight Friday from Boston to Minneapolis, and additional outbound flights each to ­Boston and Philadelphia after the game on Monday.

One Philadelphia travel agent said it is more of a challenge to find return airline seats on Monday following the game.

"No offense to Minneapolis, but January in Minnesota is not like Florida where people want to stick around for a few days after the game," said Jeffrey L. Erlbaum, president of ETA Travel in West Conshohocken.

The cheapest round-trip service between Philadelphia and Minneapolis on Friday, returning on Monday, was priced at more than $900, according to Expedia. The airfare was inexpensive compared to ticket prices to the game, which are priced above $3,000 a seat on StubHub and Vivid Seats.