Cancun (CUN) to Saint Louis (STL) flights

Program	Economy	Taxes and fees
Alaska Atmos RewardsOn American Airlines	7,500	$73.59–109.79
American AAdvantageOn American Airlines	8,000	$53.59–89.79
Iberia ClubOn American Airlines	11,000	$53.59–89.79
Qatar Airways Privilege ClubOn American Airlines	14,500	$53.59–89.79
Cathay Pacific Asia MilesOn American Airlines	15,000	$76.99–113.19
Etihad GuestOn American Airlines	15,000	$76.99–113.19
Finnair PlusOn American Airlines	15,000	$53.59–89.79
JAL Mileage BankOn American Airlines	15,000	$53.59–89.79
British Airways ClubOn American Airlines	18,000	$53.59–89.79
Qantas Frequent FlyerOn American Airlines	20,700	$53.59–89.79

Business and first class prices are in the Award Flight Pricer. Chart prices need award space on your date, so search it before you transfer points.

• 
  American Airlinesoneworld · bookable with 9 programsWho books it
• 
  Frontier AirlinesNot in an allianceWho books it
• 
  Southwest AirlinesNot in an allianceWho books it

• Alaska Atmos RewardsBooks American Airlines
• American AAdvantageBooks American Airlines
• British Airways ClubBooks American Airlines
• Cathay Pacific Asia MilesBooks American Airlines
• Finnair PlusBooks American Airlines
• Iberia ClubBooks American Airlines
• JAL Mileage BankBooks American Airlines
• Qantas Frequent FlyerBooks American Airlines
• Qatar Airways Privilege ClubBooks American Airlines

• Via New Orleans (MSY)Southwest Airlines the whole way
  
  
  
• Via Nashville (BNA)Southwest Airlines the whole way
  
  
  
  
• Via Atlanta (ATL)Delta Air Lines, Southwest Airlines and 1 more the whole way
  
  
  
  
  
  
• Via Tampa (TPA)JetBlue Airways and Breeze Airways, then Southwest Airlines
  
  
  
• Via Houston (IAH)United Airlines the whole way
  
  
  
• Via Houston (HOU)Southwest Airlines the whole way
  
  
• Via Orlando (MCO)Frontier Airlines and Southwest Airlines the whole way
  
  
  
  
  
• Via Kansas City (MCI)Southwest Airlines the whole way
  
  
  
  
• Via Dallas (DFW)American Airlines and Frontier Airlines the whole way
  
  
  
  
• Via Miami (MIA)American Airlines the whole way
  
  
  
  
  
• Via Fort Lauderdale (FLL)JetBlue Airways, then Southwest Airlines
  
  
• Via Charlotte (CLT)American Airlines the whole way
  
  
  
• Via Charleston (CHS)Breeze Airways, then Southwest Airlines
  
  
• Via Austin (AUS)Southwest Airlines the whole way
  
  
  
  
• Via Chicago (MDW)Southwest Airlines the whole way