Allegiant and Sun Country plan to merge. Here’s what their frequent flyers and other travelers can expect if the deal is approved.

Budget airlines in the U.S. like Allegiant and Sun Country have faced a surge in costs following the pandemic and the increase in domestic capacity.

The combined entity will provide more than 650 routes, including 18 international destinations in Mexico, Canada, the Caribbean and Central America, the companies said.

Allegiant and Sun Country plan to merge. Here’s what their frequent flyers and other travelers can expect if the deal is approved.