Toronto Pearson International Airport has over 76 scheduled and charter airlines, which provide non-stop service to 28 Canadian and 48 American (trans-border) destinations and to 74 other International cities.
These airlines fly into and from Pearson International Airport (sorted by Terminal):
| Airline | Code | Terminal | Phone | Alliance/Codeshare |
| TERMINAL ONE | ||||
| Air Canada | ACA / AC | 1 | 1-888-247-2262 | Star Alliance |
| Air Canada Jazz | JZA / AC | 1 | 1-800-247-2262 | Star Alliance |
| Air Jamaica | AJM / JM | 1 | 1-800-523-5585 | |
| Air New Zealand | ANZ / NZ | 2 | 1-800-663-5494 | Star Alliance / Air Canada |
| Alitalia | AZA / AZ | 1 | 1-800-361-8336 | Skyteam |
| All Nippon Airways | ANA / NH | 1 | 1-800-235-9262 | Star Alliance / Air Canada |
| Austrian Airlines | AUA / OS | 1 | 1-888-817-4444 | Star Alliance |
| Avianca | AVA / AV | 1 | 1 800 284 2622 | Air Canada |
| BMI | BMA / BD | 1 | 1-800-788-0555 | Star Alliance / Air Canada |
| Condor | CFG / DE | 1 | Contact tour operator | |
| Etihad Airways | ETD / EY | 1 | 416-221-4744 | SN Brussels Airlines |
| Lufthansa | DLH / LH | 1 | 1-800-563-5954 | Star Alliance |
| Mexicana | MXA / MX | 1 | 416-776-9538 | |
| Royal Jordanian | RJA / RJ | 1 | 1-800-363-0711 | oneworld |
| SAS Scandinavian Airline | SAS / SK | 1 | 1-800-221-2350 | Star Alliance / Air Canada |
| Singapore Airlines | SIA / SQ | 1 | 1-800-387-0038 | Star Alliance / Air Canada |
| SN Brussels Airlines | DAT / SN | 1 | 1-866-308-2230 | Etihad Airways |
| Sunwing | SWG / WG | 1 | 1-877-978-6946 | |
| Swiss Air Lines | SWR / LX | 1 | 1-877-359-7947 | Star Alliance / Air Canada |
| Thai Airways | THA / TG | 1 | 1-800-426-5204 | Star Alliance / Air Canada |
| United Airlines | UAL / UA | 2 | 1-800-241-6522 | Star Alliance |
| Varig Brazil | VRG / RG | 1 | 1-800-468-2744 | Star Alliance / Air Canada |
| TERMINAL THREE | ||||
| Aeroflot Russian | AFL / SU | 3 | 416-642-1653 | Skyteam |
| Aeromexico | AMX / AM | 3 | 1-800-237-6639 | Skyteam / Delta |
| Aerosvit Airlines | AEW / VV | 3 | 416-961-5948 | |
| Air France | AFR / AF | 3 | 1-800-667-2747 | Skyteam |
| Air India | AIC / AI | 3 | 1-800-223-7776 | |
| Air Transat | TSC / TS | 3 | 1-877-872-6728 | |
| Air Wisconsin | USA / US | 3 | 1-877-228-1327 | Star Alliance / USAirways Express |
| Alaska Airlines Inc. | AS / ASA | 3 | 1-800-252-7522 | American Airlines |
| America West Airlines | AWE / HP | 3 | 1-800-235-9292 | |
| American Airlines | AAL / AA | 3 | 1-800-433-7300 | oneworld |
| American Eagle | EGF / AA | 3 | 1-800-433-7300 | oneworld |
| Atlantic Southeast | ASQ / DL | 3 | 1-800-221-1212 | Skyteam / Delta Connection |
| British Airways | BAW / BA | 3 | 1-800-AIRWAYS (247-9297) | oneworld |
| BWIA West Indies Awys | BWA / BW | 3 | 1-800-538-2942 | |
| CanJet Airlines | CJA / C6 | 3 | 1-800-809-7777 | |
| Cathay Pacific | CPA / CX | 3 | 1-888-338-1668 | oneworld |
| Chautauqua Airlines | CHQ / UA | 3 | 1-800-241-6522 | Star Alliance / United Express |
| Comair | COM / DL | 3 | 1-800-221-1212 | Skyteam / Delta Connection |
| Continental Airlines | COA / CO | 3 | 1-800-784-4444 or 1-800-231-0856 | Skyteam |
| Continential Express | BTA / CO | 3 | 1-800-525-0280 | Skyteam |
| Cubana Airlines | CUB / CU | 3 | 416-967-2822 | |
| Czech Airlines | CSA / OK | 3 | 416-363-3174 | Skyteam |
| Delta | DAL / DL | 3 | 1-800-221-1212 | Skyteam |
| EL AL | ELY / LY | 3 | 416-967-4222 | |
| Finnair | FIN / AY | 3 | 1-800-950-5000 | oneworld / British Airways |
| Flyglobespan | GSM / Y2 | 3 | 1-800-663-8614 | |
| Harmony Airways | HMY / HQ | 3 | 1-866-868-6789 | |
| Iberia Airlines | IBE / IB | 3 | 1-800-772-4642 | oneworld / British Airways |
| Japan Airlines | JAL / JL | 3 | 1-800-525-3663 | oneworld / American Airlines |
| KLM | KLM / KL | 3 | 905-612-0556 | Skyteam |
| Korean Air | KAL / KE | 3 | 1-800-438-5000 | Skyteam |
| Lacsa/TACA | LRC / LR | 3 | (905) 694-1725 | |
| Lan Chile | LAN / LA | 3 | 1-305-670-9999 | oneworld / American Airlines |
| LOT Polish Airlines | LOT / LO | 3 | 1-800-668-5928 | Star Alliance |
| LTU Int´l Airways | LTU / LT | 3 | 1-866-266-5588 | |
| Malev Hungarian | MAH / MA | 3 | 416-944-0093 | oneworld |
| Martinair Holland | MPH / MP | 3 | 416-365-9833 | |
| Mesa Airlines | ASH / US | 3 | 1-800-241-6522 | Star Alliance / USAirways Express |
| Midwest Connect | SYX / YX | 3 | 1-800-452-2022 | |
| MyTravel Airways | MYT / VZ | 3 | (905) 694-1725 | |
| Northwest Airlines | NWA / NW | 3 | 1-800-441-1818 | Skyteam |
| Olympic Airlines S.A. | OAL / OA | 3 | 905-676-4841 | |
| Pakistan International | PIA / PK | 3 | 905-677-9479 | |
| Piedmont | PDT / US | 3 | 1-800-428-4322 | Star Alliance / USAirways Express |
| Pinnacle Airlines | FLG / NW | 3 | 1-800-603-4594 | Skyteam / Northwest Airlink |
| PSA Airlines | JIA / US | 3 | 937-454-1116 | Star Alliance / USAirways Express |
| Qantas | QFA / QF | 3 | 1-800-227-4500 | oneworld / American Airlines |
| SATA International | RZ0 / S4 | 3 | 416-515-7188 | |
| Skyservice | SSV / 5G | 3 | 1-800-701-9448 | |
| Skywest | SKW / DL | 3 | 1-800-221-1212 | Skyteam/Delta Connection |
| Thomas Cook Airlines | TCX / MT | 3 | 905-694-1725 | |
| Transaero Airlines | TSO / UN | 3 | 1-866-984-4400 | |
| US Airways | USA / US | 3 | 1-800-943-5436 | Star Alliance |
| WestJet | WJA / WS | 3 | 1-800-538-5696 | |
| ZOOM Airlines | OOM / Z4 | 3 | 1-866-359-9666 | |