Sometimes the airlines themselves offer net bargains. Check their sites below:

Toll-Free Numbers and Websites
for all Airlines:

Action Air Lines ............ 800-243-8623
Active Aero ................. 800-872-5387
Aer Lingus .................. 800-223-6537
Aero California ............. 800-237-6225
Aero Continente .............
Aeroejecutivos ..............
Aeroflot .................... 800-736-4192
Aerolineas Argentinas ....... 800-333-0276
Aeromexico .................. 800-237-6639
Aeropostal .................. 888-912-8466
Air ALM ..................... 800-327-7230
Air Aruba ................... 800-882-7822
Air Aurora .................. 800-443-0478
Air Berlin ..................
Air Botswana ................ 800-518-7781
Air Caledonia ............... 800-677-4277
Air Canada .................. 888-247-2262
Air China ................... 800-982-8802
Air Europa .................. 888-238-7672
Air Fiji .................... 877-air-fiji
Air France .................. 800-237-2747
Air India ................... 800-223-7776
Air Jamaica ................. 800-523-5585
Air Madagascar .............. 800-821-3388
Air Malta ................... 800-756-2582
Air Mauritius ............... 800-537-1182
Air Moldova .................
Air Namibia ................. 800-626-4242
Air New Zealand ............. 800-262-1234
Air North Airlines .......... 800-764-0407
Air Pacific ................. 800-227-4446
Air Portugal ................ 800-221-7370
Air Sahara .................. 877-572-4272
Air Sunshine ................ 800-327-8900
Air Tahiti Nui .............. 877-824-4846
Air Transat ................. 800-388-5836
AirTran Airways ............. 800-AIR-TRAN
Air Vanuatu ................. 800-677-4277
Air Vegas ................... 800-255-7474
Air Zimbabwe ................ 800-742-3006
Alaska Airlines ............. 800-426-0333
Alitalia .................... 800-223-5730
All Nippon Airways .......... 800-235-9262
Allegiant Air ............... 888-594-6937
Aloha Air ................... 800-367-5250
Ambassadair ................. 800-225-9919
America West Airlines ....... 800-235-9292
American Airlines ........... 800-433-7300
American Trans Air .......... 800-225-2995
Amerijet International Inc. . 800-927-6059
Arizona Express Airlines .... 866-435-9872
Asiana Airlines ............. 800-227-4262
Atkin Air ................... 800-924-2471
Atlantic Airlines ........... 800-879-0000
Atlas Air ................... 800-462-2012
Austrian Airlines ........... 800-843-0002
AviaCSA ..................... 888-528-4227
Avianca ..................... 800-284-2622
Aviateca .................... 888-477-8222
Avioimpex - Interimpex ...... 800-713-2622
Bahamas Air ................. 800-222-4262
Balair/CTA .................. 800-322-5247
Baltic Intl Airlines ........ 800-548-8181
Bangkok Airways ............. 866-226-4565
Bemidji Airlines ............ 800-332-7133
Big Sky Airlines ............ 800-237-7788
Bouraq Indonesia Airlines ...
British Airways ............. 800-247-9297
British Midland ............. 800-788-0555
Bulgaria Air ...............
BWIA International .......... 800-538-2942
CanJet Airlines ............. 800-809-7777
Cape Air .................... 800-352-0714
Caribbean Star Airlines ..... 866-864-6272
Cathay Pacific Airways ...... 800-233-2742
Cayman Airways .............. 800-441-3003
Century Airlines ............ 800-541-0410
Chalk's Ocean Airways ....... 800-4-CHALKS
China Airlines .............. 800-227-5118
China Eastern Airlines ...... 800-200-5118
China Southern .............. 888-338-8988
Colgan Air .................. 800-428-4322
Comair ...................... 800-354-9822
Condor ...................... 800-524-6975
Continental Airlines ........ 800-525-0280
Copa Airlines ............... 800-359-2672
Corporate Express Airlines .. 800-661-8151
Corsair ..................... 800-677-0720
Croatia Airlines ............ 888-426-7628
Cyprus Airways ..............
Czech Airlines ..(east coast) 800-223-2365
Czech Airlines ...(west,mw).. 800-628-6107
Delta Air Lines ............. 800-221-1212
DAC Air Romanian Airlines ...
DHL WorldWide Express ....... 800-225-5345
Dragon Air .................. 800-842-9911
Dutch Caribbean Airlines .... 800-327-7230
East Coast Flight Services .. 800-554-0550
EasyJet.com .................
Egyptair .................... 800-334-6787
El Al Israel Airlines ....... 800-223-6700
Emery Worldwide ............. 800-367-3592
Emirates Air ................ 800-777-3999
Ethiopian Airlines .......... 800-445-2733
Estonian Air ................ 800-397-1354
EVA Airways ................. 800-695-1188
Evergreen International ..... 800-345-5556
Fine Airlines ............... 800-923-9222
Finnair ..................... 800-950-5000
First Air ................... 800-267-1247
Florida Coastal Airlines .... 888-435-9322
Frontier Airlines ........... 800-432-1359
Garuda Indonesia ............ 800-342-7832
German Wings ................
Ghana Airways ............... 800-404-4262
Grand Aire Express .......... 800-70-GRAND
Great Lakes Airlines ........ 800-554-5111
Great Plains Airlines ....... 866-929-8646
Gulf Air .................... 888-359-4853
Gulfstream Intl Airlines .... 800-992-8532
Hapag-Lloyd Express ........
Hawaiian Airlines ........... 800-367-5320
Hewa Bora Airways ...........
Hooters Air ................. 888-359-4668
Horizon Air ................. 800-547-9308
Iberia ...................... 800-772-4642
Icelandair .................. 800-223-5500
Indian Airlines .............
Interstate Jet .............. 877-359-4538
Island Air .................. 800-323-3345
Japan Airlines .............. 800-525-3663
Jet Airways (India) ......... 866-835-9538
JetBlue Airways ............. 800-538-2583
Jet Express ................. 800-806-8833
JetsGo Airlines ............. 866-440-0441
Kenmore Air ................. 800-543-9595
Kenya Airways ............... 866-536-9224
KLM ......................... 800-374-7747
Knight Air ..................
Korean Air .................. 800-438-5000
Kulula Airlines .............
Kuwait Airways .............. 800-458-9248
Lacsa Costa Rica ............ 800-225-2272
LanChile Airlines ........... 800-735-5526
Lauda Airlines .............. 800-588-8399
Leading Edge Air Logistics .. 800-552-5323
Lithuanian Airlines ......... 877-454-8482
Lloyd Aereo Boliviano ....... 800-327-3098
LOT Polish Airlines ......... 800-223-0593
LTU International ........... 866-266-5588
Lufthansa ................... 800-645-3880
Lynx Air International ...... 888-LYNX-AIR
Malaysia .................... 800-552-9264
Malev Hungarian ............. 800-223-6884
Martinair Holland ........... 800-627-8462
Mesa Airlines ............... 800-637-2247
Mesaba Airlines ............. 800-225-2525
Mexicana .................... 800-531-7921
Middle East .................
Midway Airlines ............. 800-446-4392
Midwest Airlines ............ 800-452-2022
Miles Above ................. 800-469-6453
Monarch Airlines ............
Mongolian Airlines .......... 800-642-8768
Nantucket Airlines .......... 800-635-8787
Nature Air .................. 800-235-9272
New England Airlines ........ 800-243-2460
North American Airlines......
North Vancouver Air ......... 800-228-6608
Northwest Airlines .......... 800-225-2525
Norwegian Air Shuttle .......
Olympic Airways ............. 800-223-1226
Pacific Coastal Airlines .... 800-663-2872
Pakistan Intl Airline ....... 800-221-2552
Pan Am ...................... 800-359-7262
Pelita Air Service ..........
Penair ...................... 800-448-4226
Philippine Airlines ......... 800-435-9725
Polynesian Airlines ......... 800-644-7659
Phnom Penh Airways ..........
Qantas Airways .............. 800-227-4500
Rover Airways Intl .......... 800-828-4668
Royal Air Maroc ............. 800-344-6726
Royal Jordanian Airlines..... 800-223-0470
Royal Nepal.................. 800-266-3725
Royal Tongan Airlines........ 800-486-6426
Ryanair.com .................
Ryan International Airlines . 800-727-0457
SAS Scandinavian Airlines ... 800-221-2350
Saudia Arabian Airlines ..... 800-472-8342
Scenic Airlines ............. 800-634-6801
Shuttle America ............. 888-999-3273
Silk Air ....................
Singapore Airlines .......... 800-742-3333
SN Brussels Airlines ........
Sol Air ..................... 866-476-5247
Solomon Airlines ............ 800-677-4277
Song Delta Air .............. 800-359-7664
South African ............... 800-722-9675
Southeast Airlines .......... 800-359-7325
Southwest Airlines .......... 800-435-9792
Spanair ..................... 888-545-5757
Spirit Airline .............. 800-772-7117
SriLankan ................... 877-915-2652
Sun Country Airlines ........ 800-752-1218
Sunflower Airlines, Fiji .... 800-707-3454
Suriname Airways ............ 800-327-6864
SWISS ....................... 877-359-7947
TACA Airlines ............... 800-535-8780
TAM - Brazilian Airlines .... 888-235-9826
TAME (Ecuadorian/Galapagos) .
TAP Air Portugal ............ 800-221-7370
Tarom Romanian Air Transpt ..
Thai Air .................... 800-426-5204
Tower Air Greece ............
Transavia Airlines ..........
Transbrasil ................. 800-872-3153
TransMeridian Airlines ...... 866-435-9862
Trans International Express . 888-244-8922
Tropic Air .................. 800-422-3435
Turkish Airlines ............ 800-874-8875
Ukraine Intl Airlines ....... 800-876-0114
United Airlines ............. 800-241-6522
US Airways .................. 800-428-4322
USAir Shuttle ............... 800-428-4322
USA 3000 Airlines ........... 877-872-3000
Varig ....................... 800-468-2744
Vasp Brazilian Airlines ..... 866-776-3869
Virgin Atlantic ............. 800-862-8621
Virgin Blue .................
Virgin Express ..............
VLM Airlines ................
WestJet Airlines ............ 800-538-5696
Wind Jet ....................
World Airways ............... 800-967-5350
Yemen Airways ............... 800-936-8300
Yugoslav Airlines ...........