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Seats Frog guide

Frontier Airlines vs United Airlines route maps

Frontier Airlines flies 442 nonstop routes and United Airlines flies 1,109 nonstop routes. Both fly 136 routes, such as ATL–DEN, ATL–EWR, and ATL–SFO. 306 routes only on Frontier Airlines, 973 routes only on United Airlines; both serve 90 airports. Routes checked October 27, 2026.

Routes both fly
136
Only F9
306
Only UA
973
Airports both serve
90
Routes to show on the map

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Routes both fly · 136

Route sources (including Wikipedia fallback): Frontier Airlines ↗ (checked Oct 27, 2026), Frontier Airlines ↗ (checked Oct 27, 2026), Frontier Airlines ↗ (checked Oct 27, 2026), Frontier Airlines ↗ (checked Oct 27, 2026) and 197 more.

Compare other airlines

Only Frontier Airlines · 306

From Denver DEN · 2

From Orlando MCO · 50

From Las Vegas LAS · 32

From Philadelphia PHL · 21

From Atlanta ATL · 43

From Chicago MDW · 7

From Cincinnati CVG · 9

From Cleveland CLE · 10

From Dallas DFW · 26

From Miami MIA · 15

From Phoenix PHX · 20

From San Juan, Puerto Rico SJU · 11

From Tampa TPA · 16

From Ewing Township TTN · 3

From Detroit DTW · 7

From Raleigh RDU · 5

From Cancún CUN · 3

From Fort Lauderdale FLL · 4

From Baltimore BWI · 3

From Fort Myers RSW · 5

From Charlotte CLT · 1

From Salt Lake City SLC · 5

From St. Louis STL · 2

From Austin AUS · 1

From West Palm Beach DJT · 1

From Islip ISP · 1

From Seattle SEA · 1

From Los Angeles LAX · 2

Only United Airlines · 973

From Chicago ORD · 191

From Denver DEN · 142

From Houston IAH · 160

From Newark EWR · 167

From San Francisco SFO · 106

From Washington IAD · 122

From Los Angeles LAX · 54

From Hagåtña GUM · 15

From Honolulu HNL · 6

From Tokyo NRT · 5

From Key West EYW · 1

From Hong Kong HKG · 2

From Babelthuap Island ROR · 1

From Vieux Fort UVF · 1

Airports both serve · 90

Quick answers

Do Frontier Airlines and United Airlines fly the same routes?

Yes, 136 routes: Atlanta (ATL) to Denver (DEN), Atlanta (ATL) to Newark (EWR), Atlanta (ATL) to San Francisco (SFO), Austin (AUS) to Denver (DEN), Baltimore (BWI) to Chicago (ORD), Baltimore (BWI) to Denver (DEN), Baltimore (BWI) to Houston (IAH), Boise (BOI) to Denver (DEN), Buffalo (BUF) to Denver (DEN), and Cedar Rapids (CID) to Denver (DEN), and 126 more.

Which has more routes, Frontier Airlines or United Airlines?

United Airlines, with 1,109 nonstop routes to 398 airports, against 442 routes to 96 airports for Frontier Airlines.

Which airports do both Frontier Airlines and United Airlines fly to?

Aguadilla (BQN), Atlanta (ATL), Austin (AUS), Baltimore (BWI), Bogotá (BOG), Boise (BOI), Boston (BOS), Buffalo (BUF), Burbank (BUR), Cancún (CUN), Cartagena (CTG), Cedar Rapids (CID), Charlotte (CLT), Chicago (ORD), and Cincinnati (CVG), and 75 more.

Which routes does only Frontier Airlines fly?

306 routes, including Atlanta (ATL) to Austin (AUS), Atlanta (ATL) to Windsor Locks (BDL), Atlanta (ATL) to Boston (BOS), Atlanta (ATL) to Buffalo (BUF), Atlanta (ATL) to Baltimore (BWI), and Atlanta (ATL) to Cleveland (CLE), and 300 more.

Which routes does only United Airlines fly?

973 routes, including Allentown/Bethlehem (ABE) to Chicago (ORD), Abilene (ABI) to Denver (DEN), Abilene (ABI) to Houston (IAH), Albuquerque (ABQ) to Denver (DEN), Albuquerque (ABQ) to Washington (IAD), and Albuquerque (ABQ) to Houston (IAH), and 967 more.

What is the longest route both Frontier Airlines and United Airlines fly?

Los Angeles (LAX) to Orlando (MCO), about 2,214 miles great-circle.

Where do these route maps come from?

Each airline's own route map, timetable and newsroom pages, with Wikipedia used only where an airline publishes none. Every source is linked under the map; the newest was checked October 27, 2026.

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