Domestic Flights in the USA
Search and Book Domestic Flights in the USA

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Search and Book Domestic Flights in the USA
Alternative Airlines is a flight-search and booking platform where you can quickly and easily book domestic flights within the USA. We ticket hundreds of airlines, including the major carriers that you've heard of, as well as smaller regional airlines.
Fly with United, American Airlines, Delta, Frontier, Spirit, and many other airlines flying within the US. To book a domestic flight, use the search form at the top of the page to search for flights between any 2 destinations within the US.

Pay for your domestic flight in the way that you want
We have over 40 different payment methods to choose from. Pay using one of our payment plan options such as Afterpay, Affirm or Klarna. Perfect if you're looking to budget for your trip.
Or, pay using an e-wallet like PayPal, bank transfer, or even cryptocurrency, including Bitcoin, Ethereum, Litecoin and more.

Looking for Cheap Domestic Flights?
Here at Alternative Airlines, we ticket hundreds of airlines, operating routes across the US. Our clever flight algorithm makes it easier to book and will find you the best value flights by default (the most direct route for the best price), however, if you're looking for really cheap flights, you can use our filters to sort the results by cheapest flight.
Which airlines fly within the USA?
There are a number of airlines that fly within the USA, with both large international carriers that offer connections to other parts of the world and smaller regional airlines that fly state-to-state.
Here are all the airlines that fly within the US and are available to book on our site:
Alaska Airlines
Alaska Airlines is one of the larger airlines in the US, offering internal flights from its main bases at Seattle–Tacoma International Airport (SEA), Portland International Airport (PDX), Ted Stevens Anchorage International Airport (ANC)and Los Angeles International Airport (LAX), as well as several other destinations.
The airline offers flight to destinations in Alaska, Arizona, California, Colorado, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Kansas, Louisana, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada, New Jersey, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, South Carolina, Tennessee, Texas, Utah, Virginia, Washington and Wisconsin.
Allegiant Air
Allegiant Airlines offers domestic flights all around the US. It has a number of hubs and flies all across the country, however, has a strong focus on flying to destinations including Asheville (NC), Bellington (Washington), Cincinnati (Ohio), Ft. Lauderdale (FL), Fort Walton Beach (FL), Grand Rapids (Michigan), Indianapolis (Indiana), Knoxville (TN), Las Vegas (Nevada), Los Angeles (CA), Myrtle Beach (SC), Oakland (CA), Orlando Sanford (FL), Phoenix (AZ), Pinellas County (FL), Pittsburgh (Pennsylvania) and Punta Gorda (FL).
American Airlines
American Airlines is one of the world's largest carriers. It has a massive domestic route network, flying to almost every state. It has hubs in Phoenix, Los Angeles, Washington DC, Miami, Chicago, New York City, Charlotte, Philadelphia and Dallas and flies to more than 100 destinations within the US.
Avelo Airlines
Avelo Airlines is one of the newest US carriers. It focuses purely on domestic flights and doesn't fly any international routes. From its bases in Burbank, New Haven and Orlando, Avelo flies to more than 20 destinations, including Nashville, Chicago, Tampa, Fort Myers, Phoenix and more.
Breeze Airways
Created by one of the co-founders of JetBlue, Breeze Airways is another newer airline in the US. The airline offers domestic flights only and flies point-to-point flights. This means that, unlike many other US domestic airlines, it isn't based at a particular airport. Instead, it flies between lots of different US cities.
Overall, Breeze flies to more than 20 destinations. Although, its route network is growing very quickly. Some of the key US cities that it flies to include Charleston, Hartford, New Orleans, Norfolk, Provo and Tampa.
Delta Air Lines
Delta is one of the biggest carriers in the US, and — along with its regional subsidiary Delta Connection — has one of the most complete domestic route networks in the country. It flies to over 200 destinations within the US in total.
Frontier Airlines
Frontier Airlines is a low-cost US carrier that flies to more than 100 destinations across the US, with hubs in Atlanta, Chicago, Cleveland, Cincinnati, Las Vegas, Miami, Orlando, Philadelphia, Raleigh/Durham and Trenton. Flying domestic with Frontier is a great option if you're looking for cheap airfares across the US.
Hawaiian Airlines
Hawaiian Airlines is the main airline in the US connecting Hawaii with the rest of the country and is based at Daniel K. Inouye International Airport (HNL). As well as flying from Hawaii to other states in the US, the airline also offers flights to several destinations on the island.
JetBlue
JetBlue is a US airline that has its main base at John F. Kennedy International Airport and flies to more than 80 destinations across 30 states.
Southwest Airlines
Southwest Airlines is a low-cost airline with bases in Atlanta, Baltimore/Washington, D.C., Chicago, Dallas, Denver, Houston, Las Vegas, Los Angeles, Oakland, Orlando and Phoenix. Not only is the airline the largest low-cost carrier in the US, but it's also the largest airline in the world.
Spirit Airlines
Spirit Airlines is a US airline that flies all throughout the US. It flies to around 50 destinations overall, with bases at Fort Lauderdale, Orlando, Chicago, Detroit, Las Vegas and Atlantic City.
United Airlines
United Airlines and — in particular — its domestic subsidiary, United Express, flies to over 90 destinations across the US. It has hubs at Denver, Chicago and Washington D.C but flies all across the country and reaches a total of over 30 states.
United Express is made up of seven different individual airlines that operate on its behalf, under the United brand. These seven airlines are Air Wisconsin, CommutAir, ExpressJet, GoJet Airlines, Mesa Airlines, Republic Airways and SkyWest Airlines.
Why book domestic flights in the USA?
Whether you are travelling home for the holidays, booking a holiday or travelling for work, domestic flights could be the travel option for you. There is so much to see and do in the USA, that sometimes a ‘staycation’ is the perfect option for you to keep costs down rather than travelling internationally.
There are so many different places and cities to experience within this one country, whether you are wanting a weekend city break in Los Angeles, a culture trip to New Orleans or a relaxing beach holiday in the Florida Keys. A domestic flight can be the perfect holiday or get away that you need. Use our search engine now to explore the different places that you could get away to on your next break. Commuter flights are often domestic, as they depart from a small regional airport and land after a short flight in a larger airport.
Domestic flights within the USA are also popular with business travellers, especially red eye flights. Airlines that operate red eye flights within the US include JetBlue, Delta, Sun Country and more.

Internal USA Flights Check-in Times
Internal USA flight check-in time will always depend on the airline that you're flying with and your airport of departure (if you choose to check-in at the airport).
However, generally, online check-in opens 24 hours before scheduled flight departure time and closes one hour before. If you check-in at the airport, most domestic flights within the USA close check-in around 30—45 minutes before scheduled flight departure time.
Take a look at the check-in times for these airlines flying domestically within the USA:

What are domestic flights?
Domestic flights, also known as internal flights, are flights which depart and land in the same country.
Domestic flights are much more popular in larger countries such as the USA. An example of a domestic flight in the USA is one which may depart from New York and land in Los Angeles, therefore staying within the USA.
Internal flights are often cheaper than their international alternatives, due to their typically shorter travel time and costs. Some common airlines that run domestic flights within the USA are Delta, Spirit Airlines, Alaska Airlines and American Airlines.
Search for domestic U.S. flights using the Alternative Airlines search bar at the top of the page to see what cheap domestic flights we offer. Perhaps you want to visit lots of cities within America, in which case our multi-city flight planner will be very handy! If you prefer to fly directly from one city to another without any stopovers and may want to check out our direct flight guide.

Popular Routes in USA
Flights to Hawaii
Best airport to fly into:
The major airport in Hawaii is Daniel K. Inouye International Airport (HNL), which is located on the island of Oahu. This is also known as Honolulu International Airport.
Airlines that fly there:
Airlines that fly into Honolulu International Airport from domestic locations in the US include Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, Sun Country Airlines and United Airlines.
Flights to Las Vegas
Best airport to fly into:
McCarran International Airport is the best airport for flying into Las Vegas
Airlines that fly there:
There are a number of airlines that fly into Las Vegas from elsewhere in the US. These include Allegiant Air, American Airlines, Contour Airlines, Frontier Airlines, Global Crossing Airlines, JSX, Southwest Airlines, Spirit Airlines and United Express, among many others.
Flights to Miami
Best airport to fly into:
To get to Miami, the best option is to fly into Miami International Airport (MIA). This airport operates over 1,000 flights a day to 167 destinations, many of which are domestic destinations.
Airlines that fly there:
There are many airlines which fly within the USA to Miami Airport. These include American Airlines, Delta Air Lines, Frontier Airlines, Sun Country Airlines and United Airlines.
Flights to Florida
Best airport to fly into:
There are many airports which have domestic flights from elsewhere in the US into the state of Florida. To fly into Miami, please see above. To fly into Orlando, you’ll need to use Orlando International Airport. For Fort Lauderdale, you can use Fort Lauderdale - Hollywood International Airport. For Tampa; Tampa International Airport.
Airlines that fly there:
All the major American carriers fly into the majority of these airports from domestic US destinations. Airlines that commonly fly to Florida include Alaska Airlines, Delta, Frontier, JetBlue, Silver Airways, Spirit Airline and United.