23 destinations have scheduled flights from GEG, about 326 departures a week. Weekly frequencies come from airline schedules and observed departures, not live status.
| Destination | Flights per week | Airlines | Typical duration |
|---|---|---|---|
| Seattle–Tacoma International Airport (SEA) | 82 | Alaska Airlines, Delta Air Lines | — |
| Portland International Airport (PDX) | 38 | Alaska Airlines, American Airlines | — |
| Denver International Airport (DEN) | 34 | Albatross Airlines, Southwest Airlines Co., Frontier Airlines, Inc. | — |
| Phoenix Sky Harbor International Airport (PHX) | 20 | Southwest Airlines Co., American Airlines, Frontier Airlines, Inc. | — |
| Salt Lake City International Airport (SLC) | 20 | Delta Air Lines | — |
| Boise Air Terminal/Gowen Field (BOI) | 18 | Alaska Airlines, American Airlines | — |
| San Francisco International Airport (SFO) | 17 | Alaska Airlines, Albatross Airlines | — |
| Hartsfield Jackson Atlanta International Airport (ATL) | 12 | Delta Air Lines | — |
| Harry Reid International Airport (LAS) | 12 | Southwest Airlines Co., Allegiant Air LLC | — |
| Los Angeles International Airport (LAX) | 10 | American Airlines, Alaska Airlines | — |
| Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field (MSP) | 7 | Delta Air Lines | — |
| San Bernardino International Airport (SBD) | 7 | MN Airlines LLC | — |
| John Wayne Orange County International Airport (SNA) | 7 | Alaska Airlines | — |
| Frederick W. Smith International Airport (MEM) | 5 | Four Island Air | — |
| Chicago O'Hare International Airport (ORD) | 5 | American Airlines | — |
| Tri Cities Airport (PSC) | 5 | Empire Airlines | — |
| Louisville Muhammad Ali International Airport (SDF) | 5 | UPS Airlines | — |
| Yakima Air Terminal McAllister Field (YKM) | 5 | Empire Airlines, Ameriflight, LLC | — |
| Pangborn Memorial Airport (EAT) | 4 | Ameriflight, LLC | — |
| Oakland San Francisco Bay Airport (OAK) | 4 | Southwest Airlines Co. | — |
| Ontario International Airport (ONT) | 4 | UPS Airlines | — |
| Sacramento International Airport (SMF) | 3 | Southwest Airlines Co. | — |
| Walla Walla Regional Airport (ALW) | 2 | Ameriflight, LLC | — |
GET /routes returns each scheduled flight from GEG: airline, flight number, departure and arrival time, duration, days of operation and aircraft type.
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