Every Airport Code United Airlines and United Express Serves

I spent some time with the United Airlines timetable and pulled a list of all the airport codes for United and United Express (current as of March 30, 2013).  These are especially useful for finding mileage runs with ITA Matrix.  My goal is to make 1 million United miles soon, so I am spending a little more to fly United rather than US Airways (upgrades help too).  

United Airlines 737 and 777

ABE, ABI, ABQ, ABR, ABX, ABY, ACA, ACK, ACT, ACV, AEX, AGS, AGU, ALB, AMA, AMS, ANC, ANU, AOO, APN, ARN, ASE, ATL, ATW, AUA, AUS, AVL, AVP, AZO, BAH, BCN, BDA, BDL, BFL, BFS, BGM, BGR, BHM, BHX, BIL, BIS, BJI, BJX, BKK, BKW, BMI, BNA, BNE, BOG, BOI, BOM, BON, BOS, BPT, BQK, BQN, BRD, BRO, BRU, BTM, BTR, BTV, BUF, BUR, BWI, BZE, BZN, CAE, CAK, CBR, CCS, CDC, CDG, CHA, CHO, CHS, CIC, CID, CKB, CLD, CLE, CLL, CLT, CME, CMH, CMX, CNS, COD, COS, CPR, CRP, CRW, CSG, CTS, CUN, CUU, CVG, CWA, CZM, DAB, DAL, DAY, DCA, DEL, DEN, DFW, DGO, DHN, DLH, DNA, DOH, DRO, DRT, DSM, DTW, DUB, DUJ, DXB, EAU, EDI, EGE, EKO, ELH, ELM, ELP, EMD, ERI, EUG, EVV, EWN, EWR, EYW, EZE, FAI, FAR, FAT, FAY, FCA, FCO, FKL, FLL, FNT, FPO, FRA, FSD, FSM, FUK, FWA, GDL, GDV, GEG, GFK, GGT, GGW, GHB, GIG, GLA, GLH, GLT, GNV, GPT, GRB, GRK, GRR, GRU, GSO, GSP, GTF, GTR, GUA, GUC, GUM, GVA, HAM, HDN, HIB, HIJ, HKG, HLN, HNL, HOB, HOU, HPN, HRL, HSV, HUX, HVR, IAD, ICT, IDA, IMT, IND, INL, IPL, IST, ITH, ITO, IYK, JAC, JAN, JAX, JFK, KIJ, KIX, KOA, KWA, KWI, LAN, LAS, LAW, LAX, LBB, LCH, LEX, LFT, LGA, LHR, LIH, LIM, LIR, LIS, LIT, LMT, LNK, LOS, LRD, LSE, LWS, LWT, MAD, MAF, MAJ, MAN, MBJ, MBS, MCI, MCO, MDT, MEI, MEL, MEM, MEX, MFE, MFR, MGA, MGM, MHT, MIA, MID, MKC, MKE, MKG, MLB, MLI, MLM, MLS, MLU, MNL, MOB, MOD, MOT, MRY, MSL, MSN, MSO, MSP, MSY, MTJ, MTY, MUC, MXP, MYR, NAS, NBW, NGO, NRT, OAK, OAX, OGG, OKC, OKJ, OLF, OMA, ONT, ORD, ORF, OSL, OTH, PAH, PAP, PBC, PBI, PDX, PHL, PHX, PIA, PIB, PIH, PIT, PKB, PLN, PNS, PQQ, PSC, PSP, PTY, PVD, PVR, PWM, QRO, RAP, RDD, RDM, RDU, RHI, RIC, RNO, ROA, ROC, ROK, ROR, RST, RSW, RTB, SAL, SAN, SAP, SAT, SAV, SBA, SBN, SBP, SCE, SDF, SDJ, SDY, SEA, SFO, SGF, SGU, SHV, SIN, SJC, SJD, SJO, SJT, SJU, SLC, SLP, SLW, SMF, SMX, SNA, SNN, SPI, SRQ, STL, STR, SWO, SYD, SYR, TAM, TCB, TCL, TGU, TLH, TLV, TPA, TPE, TRC, TRI, TUL, TUP, TUS, TVC, TXK, TXL, TYR, TYS, UIO, UOX, VER, VLD, VPS, VSA, XNA, YAP, YEG, YHZ, YLW, YMM, YOW, YQB, YQM, YQR, YQT, YUL, YUM, YVR, YWG, YXE, YXU, YYC, YYJ, YYT, YYZ, ZIH, ZLO, ZRH

ITA Matrix Search Game - Most Minimum Connections

I read that some airport pairs require a minimum of 20 stops to travel between.  This seemed stunning, so I went to ITA Matrix flight search trying to see how many minimum connections I could find between two cities.  My personal best so far is 9 connections for Grayling, Alaska (KGX) to Tezpur, India (TEZ).  

Canada may be a good place to start looking

Can you do better? The ITA Matrix search game is born. Post your best pairings in the comments; it’ll be a fun game.

Travel Tip - ITA Matrix Airfare Search

Booking a trip is sometimes the most difficult part of the journey.  Luckily, Google has the solution, not Google Flight Search. The best Google travel  product is ITA Software's matrix airfare search tool:  http://matrix.itasoftware.com/?showPricePerMile=true.  This tool has more options than anything else on the web.  I love the feature that allows you to search and airport within 2,000 miles of your selected airport (a great way to find cheap flights to Europe with only one search).  You can also hand enter any number of airport codes in the search box.  It can even sort fares by price per mile.  The month long search lets you check fares of a 30 day period with several different trip duration.  The one downside is you need to book somewhere else, sometimes a challenge to reproduce the routing online, but most United agents can do it (to avoid the $25 fee, use a paper voucher or a gift certificate) and United.com works 80% of the time.

Some advanced routing codes:  (these will work with any airline code)
UA,UA+   2 or more flights on United
AA  Single flight on American
AS,UA  First on Alaska, second on United

ITA Matrix Airfare Month Long Search Example

UPDATE 6/23/13

I usually use Expedia to buy flights found on ITA Matrix.  The trick is to just be specific with departure time and airline preference in the advanced search function.  If that fails, I use Hipmunk to book a fare rather Expedia or Travelocity.  Hipmunk doesn't 100% of the time either.  Sometimes the airlines just won't sell it to you.

When doing a mileage run (trip just for miles) search like the one pictured, be sure to uncheck the Allow Airport Changes field.  Also set the Length of Stay field to 0 so you don't need a hotel; a 0 length of stay will include overnight flights in the results.